What is "sinker"?

A sinker is a type of donut that is characterized by its dense, heavy texture. Unlike traditional donuts, which are light and fluffy, sinkers are made with ingredients such as potatoes or other starches that give them their characteristic weight and heft. The dough is typically rolled out and cut into the desired shape, then deep-fried until it is golden brown and crispy on the outside and dense and chewy on the inside. Sinker donuts are often enjoyed plain or with a light dusting of powdered sugar, and are a popular pastry in many countries around the world.