In a small
saucepan, over medium-high heat, bring the half-and-half and the vanilla
bean (if using) to the scalding point (the milk begins to foam up).
Remove from heat, take out the vanilla bean and scrape the seeds from
the bean with the back of a knife, and mix the seeds back into the
Meanwhile in a
stainless steel bowl beat the egg yolks and sugar until light and fluffy
(about two minutes). You can do this with a wire whisk or I like
to use a hand mixer. Gradually pour the scalding
half-and-half into the whipped egg yolk mixture, making sure you keep
whisking constantly so the eggs don't curdle. If any lumps do
form, strain the mixture first before heating.
Place the bowl
over a saucepan of simmering water and, stirring constantly with a
wooden spoon, cook until the custard thickens enough that it coats the
back of a spoon (170 degrees F) (77 degrees C). The term 'coat a
is a technique used mainly as a way to
test when an egg-based custard or sauce is done. A spoon, usually
wooden, is placed in the custard and, when the spoon is raised, the film
of custard on the back of the spoon will stay in place even when you
draw a line with your finger through the middle of the custard.
remove the custard from the heat and continue to stir the custard for a
few minutes so it does not overcook. At this point stir in the
vanilla extract, if using. Cover and let cool until it comes to
room temperature and then refrigerate the custard until it is completely
cold (several hours but preferably overnight).
cold custard to the chilled container of your ice cream machine and
process according to the manufacturer's instructions. Once the ice
cream is made, to create the marbleized or swirled pattern, place about
one third of the ice cream in the bottom of a container and then pour
about one half of the raspberry sauce on top of it. Top the sauce with
another one third of ice cream and then the rest of the raspberry sauce.
End with the remaining ice cream. Cover and place in the freezer for
several hours or until firm. If the ice cream becomes too hard place in
the refrigerator for about 30 minutes before serving so it can soften.
Makes about 3 cups.
Raspberry Swirl Ice Cream Recipe:
2 cups (480 ml)
2/3 cup (130
grams) granulated white
or 1 1/2 teaspoons pure vanilla extract
(Sauce) or raspberry preserves
Note: Half and Half cream is a
mixture of cream and whole milk and contains 10 - 12% butterfat.