There's no faster route to homemade ice cream than a no-cook base like this one. The absence of egg yolks lets the milk and cream shine and makes for a light, fluffy ice cream. Vanilla extract is eschewed for another infusion: cocktail bitters. Both involve potent aromatics steeped in alcohol and can lend background flavor to a simple base. Here, saffron and orange bitters join forces for an ambrosial, can't-put-your-finger-on-it deliciousness.