Prep the parts, not just the meals

Most meal prep starts the same way: cook one big pot of something, split it into five boxes, and by Thursday you never want to see it again. There is another way. Instead of cooking five identical meals, you cook a few building blocks (a protein, a base, some vegetables and a sauce) and put them together differently each day.

The maths is the fun part. Three proteins, two bases, two vegetable options and two sauces make 24 different bowls from just nine things to cook. Pick your blocks below and see how many bowls you get, and what a week could look like.

Why parts work

Cooking in parts solves two problems at once. Variety is the first: the main reason people give up on meal prep is boredom, and a different sauce or base changes a bowl completely. Flexibility is the second: if plans change, a tub of cooked lentils can become a soup, a wrap filling or a salad topper, while a sealed meal can only be one thing.

It also makes balanced eating easier to see. A simple plate has a protein source, a starchy base, plenty of vegetables and something for flavour. Your blocks map straight onto that, so every combination already covers the basics.

Keep it safe

Cooked food spoils faster than people expect, so the timing matters more than the container. Public health guidance is consistent on a few points:

• Cool quickly. Get cooked food into the fridge within about 2 hours. Splitting it into small, shallow portions helps it cool faster. Never put a hot pot straight into the freezer.
• Keep the fridge cold. Aim for 5°C or colder. Voedingscentrum recommends 4°C.
• Eat within about 2 days. After that, freeze portions instead. Both Voedingscentrum and NHS inform give 2 days for cooked leftovers in the fridge.
• Reheat until steaming hot all the way through, stirring as you go. Reheat once, and throw away any reheated food that is left.

Some blocks freeze well (cooked beans and lentils, sauces, soup-like dishes) and some do not (raw salad vegetables, anything meant to stay crunchy). Rice is a special case, so read the guide on reheating rice before you batch it. Guidance varies a little between countries, so check your own national food-safety advice too.

Cook the blocks once, mix them differently each day, and freeze what you won't eat in two days.

A simple prep session

Pick one protein, one base, one vegetable and one sauce for a start. Roast the vegetables and cook the protein and base at the same time, make the sauce while they cook, and portion everything into small containers once it has cooled. That is about an hour of work for a week of lunches that don't repeat. Next week, change one block.

This guide is general information, not medical advice. If you have a medical condition, are pregnant or breastfeeding, have or have had an eating disorder, or take medication, talk to a doctor or dietitian before changing how you eat.

Sources

• Voedingscentrum: 5x kliekjes (leftovers safety)
• NHS inform: Preparing and cooking food safely