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This homemade lemon curd ice cream recipe produces extremely smooth, dense, and creamy ice cream with a wonderfully sweet lemon flavour. The recipe will be split into three sections: SECTION 1: The Science of Ice Cream Making and Preparation Tips; SECTION 2: Full Recipe; and SECTION 3: Quick-Read Recipe.
Please click here to read SECTION 1: The Science of Ice Cream Making and Preparation Tips. I strongly recommend starting with this section.
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SECTION 2: FULL RECIPE
PREP TIME:About 15 minutes
HEATING TIME:About 35 minutes for the mixAbout 15 minutes for the lemon curd
INGREDIENTS:Cream Full-fat, semi-skimmed, or skimmed milk Unrefined sugar Skimmed milk powder Egg yolks
LEMON CURD(About 8 large lemons are needed for the zest and juice) Finely grated zest 30g Lemon juice 170g Egg Yolks 93g Sugar 100g
Produces about 900 ml (0.95 quarts) of ice cream mix and lemon curd.
1. THE IMPORTANCE OF MILK FAT
Milk fat contributes significantly to the rich, full, and creamy flavour and to the smooth texture of ice cream (Goff & Hartel, 2013). Not enough milk fat is likely to produce ice cream that is coarse or sandy, whereas too much will likely result in a heavy buttery texture. Above is the spreadsheet I use to calculate my mixes and I’ve included it for you guys to accurately calculate the quantities of milk and cream that you’ll need. It’s based on the mix formulation calculations in Ice Cream (7th ed) (2013) by Goff & Hartel, which I highly recommend reading.
It’s important that you check the fat content percentage of the milk and cream that you’ll be using. Here in the U.K, our double cream and skimmed milk contain between 47.5% and 50.5% and less than 0.5% of milk fat respectively. You can use full-fat, semi-skimmed, or skimmed milk.
To start, enter the fat percentage of your cream in the yellow Cream Fat % cell located on the top left of the spreadsheet. Do the same for the milk fat percentage in the yellow Milk Fat (%) cell. PRESS ENTER, OR CLICK ON A DIFFERENT CELL, FOR THE SPREADSHEET TO UPDATE. The spreadsheet will then display the quantities of milk, cream, sugar, egg yolks, and skimmed milk powder needed (in grams) in the cells in blue.
2. PREPARING AN ICE BATH
Before you start preparing your mix, take a large bowl and fill it with enough ice to make an ice bath. Have a large zip-lock freezer bag ready next to the bowl, along with some table salt. We’ll be using the zip lock bag and ice bath to ensure that the mix is cooled as quickly as possible after heating. This minimises the time the mix spends in the ‘danger zone’, between 5°C (41°F) and 65°C (149°F), where bacteria likes to multiply. The longer your mix spends in this temperature range, the more bacteria is likely to multiply and impart an undesirable taste and smell.
3. HEATING THE MIX
Weigh your pan and record its weight. We’ll use this weight to check whether we’ve achieved the desired 15% reduction after 25 minutes of heating.
Once you’ve prepared the ice bath and weighed your pan, add the sugar and skimmed milk powder followed by the egg yolks. Mix the yolks, sugar and skimmed milk powder to help prevent the yolks from curdling during heating.
Add the cream and milk and spend a good minute or so mixing all the ingredients before you switch on the heat.
Over a medium heat, heat the mixture until the temperature reaches 71°C (160°F), making sure that you’re constantly stirring. You’ll risk burning the milk proteins and curdling the egg yolks if you don’t constantly stir the mix. It takes me 10 minutes to get my mix up to 71°C (160°F).
Once the temperature reaches 71°C (160°F), turn the heat down to low, move your pan slightly off the heat, and continue heating and stirring until the temperature reaches 72°C (162°F). Use a food thermometer to keep your mix at 72°C (162°F) for 25 minutes, adjusting the position of your pan to help regulate the temperature. Don’t worry if you go slightly over 72°C (162°F); just try and keep the temperature as close to 72°C (162°F) as you can.
4. COOLING THE MIX
After 25 minutes of heating at 72°C (162°F), take the pan off the heat and weigh it. If the weight is greater than 850g plus the weight of the pan, place it back on the heat and continue heating for another 2-3 minutes or until you get the weight down to 850g.
Carefully pour the mix into the zip-lock bag and seal. Place the sealed bag in the ice bath and pour about a tablespoon of salt onto the ice to lower the temperature and cool the mix faster.
Once the mix has cooled to below 5°C (41°F), place the zip-lock bag in the fridge and leave overnight to age.
5. PREPARING THE LEMON CURD
Prepare a second ice bath, or use the same one if you still have ice that hasn’t melted.
To a small pan, add 93g egg yolks and 100g sugar and mix together. Add 30g grated lemon zest, 170g of lemon juice, and stir well.
Over a medium-low heat, slowly bring the temperature up to just above 71.2°C (160.2°F) and hold it there for 10 minutes to pasteurise the yolks. Be careful not to let the lemon curd rise above 72°C (162°F) to prevent the yolks from curdling and the eggy hydrogen sulphide taste from developing. The lemon mix won’t thicken much during heating so don’t feel that you have to continue heating for longer than 10 minutes. This heating stage is primarily to pasteurise the yolks; the mix will thicken as it ages overnight in the fridge.
After 10 minutes of heating, carefully strain the mix, using a large spoon to press down on the zest to extract as many flavour compounds as possible. Pour the mix into a zip-lock bag and place in your ice bath.
Once the lemon mix has cooled to below 5°C (41°F), place it in the fridge to age overnight.
6. CHURNING THE MIX
Once you’ve aged your mix and lemon curd overnight, carefully pour the mix into your machine followed by the lemon curd.
TIP#1 – FREEZER BOWL WALL TEMPERATUREIf you’re using an ice cream machine with an in-built compressor, with the bowl in the machine, switch on the compressor and leave it running for 15 minutes before adding the mix. This will ensure that the freezer bowl is as cold as possible when the mix is added, which increases the rate of nucleation and reduces residence time.
TIP#2 – EFFICIENT HEAT TRANSFERIf you’re using the Cuisinart ICE 30BC, use your thumb to push the dasher against the side of the bowl as soon as you pour in the mix. This will ensure that the dasher scrapes off the layer of ice that freezes to the side of the bowl. Any ice that is frozen to the side of the bowl will act as an insulator, slowing the release of heat from the ice cream to the bowl and increasing the residence time. Goff & Hartel (2013) note that even a very thin layer of ice remaining on the bowl wall can cause a dramatic reduction in heat transfer.
Use a spoon to push along any static lumps of ice cream and ensure that the mix is constantly moving whilst in the machine. Static lumps will likely take longer to freeze, resulting in greater ice crystal growth.
7. DRAW TEMPERATURE
Your ice cream will be ready when it develops a nice dry, stiff texture, and starts forming ribbon-like swirls. It should have a draw temperature (the temperature at which the partially frozen ice cream is removed from the machine) of between -9°C and -12°C (15.8°F and 10.4°F) with a lower draw temperature usually resulting in smaller ice crystals (Arbuckle, 1986).
Below are the residence times and draw temperatures for the domestic machines I’ve tried:
- Lello Musso Pola 5030 Dessert Maker: 900 ml (0.95 quarts) mix – 13 minutes, -11°C (12.2°F).
- Lello 4080 Musso Lussino 1.5-Quart Ice Cream Maker: 600 ml (0.63 quarts) – 16 minutes, -11°C (12.2°F).
- Cuisinart ICE-100 Ice Cream and Gelato Maker: 900 ml (0.95 quarts) mix – 35 minutes, -10°C (14°F).
- Breville BCI600XL Smart Scoop Ice Cream Maker: 700 ml (0.74 quarts) – 34 minutes, -9°C (15.8°F).
- Whynter ICM-200LS: 900 ml (0.95 quarts) mix – 28 minutes, -10°C (14°F).
- Cuisinart ICE 30-BC: 900 ml (0.95 quarts) mix – 34 minutes, -11°C (12.2°F).
8. EXTRACTION TIME
The extraction time (the time it takes to get your partially frozen ice cream out of your machine and into the freezer) has a considerable effect on ice crystal size. This is because as you extract your ice cream from the bowl and into a plastic container, it spends time at room temperature. At this relatively warm room temperature, some of the ice melts from the large ice crystals and the crystals that were initially small melt completely. When you then get your ice cream into your freezer for the static freezing stage, the melted ice re-freezes onto the large ice crystals that survived. The result is that the total number of ice crystals is reduced and their size increases, resulting in coarse or grainy texture.
TIP#3 – QUICK EXTRACTIONJust holding ice cream at a relatively warm room temperature as you extract it from your machine results in an increase in mean ice crystal size and a decrease in the number of ice crystals present. It’s therefore important that you extract the ice cream from the freezer bowl and get it into your freezer as quickly as possible.
9. THE STATIC FREEZING STAGE
At a draw temperature of between -9°C and -12°C (15.8°F and 10.4°F), your ice cream will have a consistency very similar to that of soft serve ice cream and will need to be placed in your freezer to harden. After about 4 hours, depending on your freezer, your ice cream will have a nice firm scoopable consistency, somewhere around -15°C (5°F), and be ready to serve.
10. SERVING YOUR ICE CREAM
Serve your ice cream at around -15°C (5°F). As the serving temperature is increased from -14.4 (6.1) to -7.8°C (18°F), flavour and sweetness become more pronounced.
If you do give the recipe a go, I’d love to hear your thoughts so please do get in touch. Please help other chefs by using the stars at the top of the page to rate the recipe and please spread the love on facebook with the buttons below. Ruben 🙂
SECTION 3: QUICK-READ RECIPE
- Fill a large bowl with some ice. Place some table salt and a zip-lock bag next to the bowl ready for later.
- Combine the sugar, skimmed milk powder, egg yolks, cream, and milk in a large pan. Heat over a medium heat until the temperature reaches 71°C (160°F), making sure that you’re constantly stirring.
- When the mix reaches 71°C (160°F), quickly turn the heat down to low and position your pan slightly off the heat. Continue heating and stirring until the temperature reaches 72°C (162°F).
- Once the mix reaches 72°C (162°F), continue heating for 25 minutes whilst constantly stirring.
- After 25 minutes of heating, carefully pour the mix into the zip lock bag. Place the bag in the large bowl and pour about a tablespoon of salt over the ice.
- Once the mix has cooled to below 5°C (41°F), place in the fridge to age overnight.
- Prepare a second ice bath, or use the same one if you still have ice that hasn’t melted. To a small pan, add 93g egg yolks and 100g sugar and mix together. Add 30g grated lemon zest, 170g of lemon juice, and stir well.
- Over a medium-low heat, slowly bring the temperature up to just above 71.2°C (160.2°F) and hold it there for 10 minutes to pasteurise the mix. The lemon mix won’t thicken much during heating so don’t feel that you have to continue heating for longer than 10 minutes. The heating stage is primarily to pasteurise the yolks; the mix will thicken as it ages in the fridge.
- After 10 minutes of heating, carefully strain the mix, using a large spoon to press down on the zest to extract as much flavour as possible. Pour the mix into a zip-lock bag and place in your ice bath.
- Once the lemon mix has cooled to below 5°C (41°F), place it in the fridge to age overnight.
- The next day, pour the mix into your ice cream machine followed by the lemon curd.
- After about 30 minutes of churning, depending on your machine, quickly empty the ice cream into a plastic container and place in the freezer for about 4 hours to harden.
- After about 4 hours, your ice cream will have a nice firm consistency and will be ready to serve.
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