Don’t let the Italian name intimidate you—semifreddo (frozen mousse) is essentially ice cream with no need for a special machine. You do need to make four “building blocks” (whipped cream, puréed fruit, whipped egg yolks, and sugar syrup), but all are straightforward. From there, just fold it all together, stick it in the freezer, and come back to a rich, velvety, raspberry-sweet-tart treat.
*This is pastry chef lingo for the very smooth, thick, and pale-yellow stage where, when you lift your whisk or spoon from the mixture, a “ribbon” of yolks will stream off of it, as opposed to a drip.