A few crucial steps to make luscious, Rich & Creamy Lemon Curd. Measure the ingredients accurately and watch the temperature using a Food Thermometer. This is important.
Zest the lemon first. We need 2-3 tablespoons of fine lemon zest. Lemon Zester
2-3 tablespoon Lemon zest
Mix the lemon zest with one cup of sugar. Massage these two ingredients with your clean hands for a couple of minutes. This releases the oil and the aroma in the lemon zest.
1 cup Sugar
Mix the eggs, yolk, sugar, lemon juice, and zest in a saucepan. Place the pan on medium heat and whisk constantly. The mixture will start thickening, and you will eventually see some large boils. Whisk until the mixture reaches 120℉ to 140℉. Remove it from the heat, and run it through a fine strainer. Discard all the lemon pulps and egg remaining.
3 Eggs, ½ cup Lemon Juice, 1 Yolk
Pour the mixture into a bowl and cover it with cling wrap. The cling wrap should touch the mixture.
Let the bowl sit on the counter until the mixture temperature reaches 80℉. Now add the butter in one tablespoon at a time and whisk thoroughly after each addition. The mixture should not get cold. Otherwise, the butter will not melt. Mix in the vanilla extract and whisk well.
⅓ cup Butter, 1 tablespoon Vanilla extract
Once more, cover the mixture with cling wrap touching the lemon curd. Place the bowl in the fridge overnight. Transfer the curd into Mason jars and store.