Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make icing for cinnamon rolls [title] Heat the butter until it browns. [step] Place 6 tablespoons (84 g) of butter in a small saucepan and turn the burner to medium. Stir the butter occasionally until it melts.

Ending1: Once the butter melts, drop 3 chopped shallots , 2 large mushrooms , 1 clove of garlic, and a small teaspoon of spice powder into the butter. Continue to cook the ingredients until the cheese melts and the sauce is evenly browned. Ending2: Continue to cook and stir the butter for an extra 1 to 2 minutes so the butter becomes fragrant and turns golden brown. Turn off the burner and set the saucepan on a cold burner. Ending3: [substeps] The butter should soften as it heats so it comes out the side of the pan warm. Sugar is also a good option if you're making the batter with cinnamon. Ending4: [substeps] You may want to use a long-handled spoon to stir the butter. For faster melting and spotting, use a wooden spoon.

Answer format: ending1/ending2/ending3/ending4