Prepared in large quantities and then frozen, it ensures a serving of vegetables for busy meals! This puree has pleased all the children I've cared for, to the point of becoming a Proustian madeleine! The "pot-au-feu" trays are perfect for having the right quantities of cabbage, celery, etc. (1kg of carrots, 500g of potatoes, and a 1kg tray of "pot-au-feu vegetables" and you're good to go), but don't hesitate to use whatever vegetables you have on hand or prefer! For example, you can replace white cabbage with cauliflower, add more leeks, or for a milder taste, add potatoes, etc.