The phrase "to loosen the cake" means to gently remove a cake from its baking pan or mold by separating it from the sides, so it can be taken out easily without breaking or sticking.
Sentences with «to loosen the cake»
Immediately loosen cake from edges of pan by gently pulling the parchment paper. (easydessert.org)
With a knife, loosen cake from rim of pan. (piarecipes.com)
Gently loosen the cake by running a knife around the sides of the pan, and invert on to a cake plate or serving dish. (delightfulemade.com)