Answer: PEAS

Peas are a type of vegetable that are commonly used in cooking. They are small, round, and green in color. In the context of the clue "Things 'split' in a green soup," it refers to a specific variety of peas called split peas. Split peas are legumes that have been dried and then split in half, making them ideal for use in soups. They are often used to make dishes such as split pea soup, which is a thick and hearty soup made from simmering split peas with various vegetables and seasonings.

Note: The provided meaning of the answer is for the latest New York Times crossword puzzle clue: Ingredients in a green baby food purée. Explanations are generated by AI and may be inaccurate.