A part is not a universal measuring unit. It can be anything, a cup, a spoon, a bowl, a bucket, or anything else that can hold something. Before going any further, you have to choose the tools you want to use for measuring. Let’s say you choose a cup. So, one cup will be one part. Multiply it with four, and you have your four parts. For example: 1 cup = 1 part  1 cup × 4 = 4 parts You will need 1 cup of sugar and 4 cups of water for the recipe. You can make it as large or small as you want.