What is this close-up picture? (WotsThat: Waffle iron surface)

Question

What object is shown in this zoomed-in close-up photo?

VerdigrisX · Accepted Answer

Waffle iron surface. Waffle irons have been around since the 14th century, but the electric versions that created those perfectly uniform grid patterns didn't become popular until the early 1900s. The distinctive square or rectangular indentations serve a practical purpose beyond aesthetics—they increase the surface area for crispier edges while keeping the inside fluffy.

Answer: Waffle iron surface

More household close-ups