Cook onion and garlic in butter with 1/4 teaspoon salt in a large heavy saucepan over medium heat, stirring occasionally, until onion is softened, about 5 minutes.

• 在深的平底锅中加入1/4大汤匙的水再洒入适量黄油，将准备好的洋葱和大蒜放入，用中火煮，当洋葱变软了就可以了，这个过程大约要5分钟。