Refreshing Lemonade Flavored Ice Cream

Directions

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  Pour the milk into the pan and put it on the stove to boil, cover and set aside.
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  Whisk the egg yolks and sugar well with a mixer until they become thick and light.
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  Pour the mixture of egg yolks and sugar lightly into the milk, stirring constantly.
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  Return to the stove and heat over low heat until it starts to thicken. Stir constantly with a food processor. Don’t let it boil, because the eggs could coagulate. Add lemon extract, zest and juice and stir.
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  Allow the mixture to cool to room temperature and refrigerate for at least 3 hours. Then put the mixture in the freezer or in the ice cream machine. If you put it in the freezer, make sure to stir the mixture with a whisk, every 20 minutes, until it is completely frozen. When it starts to freeze, add the concentrate and continue with the process.