They're cooked in a special cast-iron pan with dozens of small dimples, each poffertje flipped individually with a fork or skewer, and eaten with a tiny two-pronged fork.
A yeasted batter made with buckwheat and wheat flour is poured into a dimpled pan, cooked into small puffy discs, and piled onto a plate with a heap of melting butter and powdered sugar. Market squares and fairs across Noord-Holland set up poffertjes stalls where the batter is cooked fresh to order.