The phrase "oil shimmers" means that when oil is spread out or spilled, it creates a shiny, colorful effect like a thin layer of rainbow on the surface.
Sentences with «oil shimmers»
In a large skillet over medium - high heat, add SUN - DRIED TOMATOES and their OIL; heat until oil shimmers (about 2 min). (thekitchengirl.com)
When the olive oil shimmers, add the onion and cook until beginning to turn translucent. (chattavore.com)
When oil shimmers, add the anchovies, garlic, shallot, and bread crumbs. (bookpage.com)