In the Canary Islands of Spain, quesillo refers to a dessert that is a type of flan made with whole eggs and sweetened condensed milk, which makes for a firmer texture than traditional flan.
In the Canary Islands of Spain, quesillo is a local term for a unique dessert consisting of a type of flan prepared with whole eggs and sweetened condensed milk, yielding a denser consistency compared to standard flan.