caramelize
verb (UK usually caramelise) uk/ˈkær.ə.məl.aɪz/ us/ˈkɑːr.məl.aɪz/
[ I ]变成焦糖
If sugar caramelizes, it turns into caramel.
[ T ]使裹上焦糖
to cook a food with sugar so that the food becomes sweet and often brown
caramelized onions/nuts 裹焦糖的洋葱／坚果