Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make hungarian goulash [title] Heat 2 tbsp. Of vegetable oil in a pan over medium heat. [step] Give the oil a minute to heat up.

Ending1: [title] Spoon 4 tbsp of oil into a cube. [step] Coat the cube in the hot oil. Ending2: The oil should start to simmer and froth, which indicates that it's ready to be enjoyed. [title] Cook over the stove until the oil reaches a rolling boil. Ending3: Bring to the boil over medium heat, uncovered. [substeps] When the oil reaches a rolling boil, remove the pan from the stove and set it aside. Ending4: [title] Add 1 chopped onion to the oil. [step] Sauté the onion until it's golden.

Answer format: ending1/ending2/ending3/ending4