What does “room temperature” mean in cooking English?

“Room temperature” means the normal temperature inside a room — usually around 20 degrees Celsius or 68 degrees Fahrenheit. It is not warm from cooking and not cold from the fridge. In cooking and baking, this instruction appears often: you leave an ingredient “at room temperature” so it is ready to use. In this bread recipe, the baker says “I’m going to leave it at room temperature for about an hour.” This helps the bread dough rise properly before baking.

You will see “room temperature” in many cooking contexts. Recipes often say “butter at room temperature” because soft butter mixes more easily into a dough or batter than cold, hard butter. You will also hear “let it cool to room temperature” after cooking something hot — this means wait until it is not hot before storing or serving it. The phrase “at room temperature” is natural and standard in recipes. You do not say “at the room temperature” — there is no “the” before “room temperature” in this expression. This small grammar point is worth noting for learners who write or follow recipes in English.