You will be given a definition of a task first, then some input of the task.
In this task, you will be presented with the directions of a recipe separated by "," and have to fill in the "___" which is a step that is missing from the recipe.

Peel and coarsely chop potatoes.,Trim leeks, slice in half longwise and separate under running water to remove all sand and dirt, then coarsely chop.,Clean and quarter mushrooms.,______,Add salt, about 2 teaspoons, and bring to boil.,Simmer until potatoes are tender, about 20 minutes.,Ladle 1/2 of cooked potato mixture into food processor and add half of the spinach.,Process until smooth and thick.,Repeat with rest of potatoes and spinach.,Add about 1 Tablespoon butter buds for flavor and thin with skim milk if needed.,Serve hot.
Output:
Place all in large pot and just cover with water.