Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make béchamel sauce [title] This is the basic recipe for béchamel sauce. [title] Place 2 tablespoons of butter in a small saucepan. [title] Heat the butter over medium heat until it's melted.

Ending1: [step] Always keep the ratio of butter to flour equal, regardless of whether you are producing a thinner or thicker sauce. [title] Mix in 2 tablespoons of flour to make a roux, or the beginning stage of the sauce. Ending2: [title] Stir in the red pepper flakes. [title] Cook the sauce until it thickens. Ending3: [title] Place 1 cup of the flour into the butter, along with the dry ingredients. [title] Mix the flour and the water together. Ending4: [title] Add the béchamel and let it melt. [title] Whisk in 3 cups (0.14 liters) of water.

Answer format: ending1/ending2/ending3/ending4