If I have a recipe that calls for 600 grams of potatoes how many do use?

You can't determine the exact number of potatoes needed from just the weight. Here's why:

* Potato size varies: Potatoes come in many shapes and sizes. A small potato might weigh 100 grams, while a large one could weigh 300 grams or more.

* Recipe variations: Some recipes might call for potatoes to be peeled, which removes weight. Others might require them to be cubed or diced, changing their density.

To figure out how many potatoes you need:

1. Estimate the size: Look at the potatoes you have. Are they small, medium, or large?

2. Weigh a few: Weigh a few potatoes that represent the average size of the ones you have.

3. Do the math: Divide the total weight needed (600 grams) by the average weight of the potatoes you weighed.

For example: If your average potato weighs 150 grams, you'll need 600 grams / 150 grams per potato = 4 potatoes.