What is meal prep?
Meal prep (cooking meals ahead) means cooking once or twice a week several portions or food components meant to be eaten over the following days. Done well, this method saves 4 to 6 hours of weekly cooking, reduces daily decision fatigue, and mechanically improves nutritional balance.
Two main methods
The “finished dishes” method means cooking 5 to 7 portions of the same dish on Sunday, dividing them into individual containers, and eating them as-is on the following days. It is the simplest method to start with, but the least varied — after three days, boredom sets in.
The “components” method means preparing separate elements (cooked starches, roasted vegetables, proteins, sauces) and then recombining them differently each day. Bowls, gratins, skillet meals, wraps — variety multiplies for the same cooking time. It is the method most nutrition coaches recommend for sticking with the practice over time.
A hybrid variant for a typical week: 2–3 finished dishes for lunches at the office, and components for dinners to recombine according to the evening's mood. A reasonable compromise between variety and simplicity.
Minimum equipment
Six to eight airtight containers, ideally transparent and stackable. Seeing food directly in the fridge is half the work: what you see, you eat; what ends up at the back ends up in the trash. Stainless steel, glass, or BPA-free plastic depending on budget.
A large baking sheet to roast vegetables in bulk in one go. A slow cooker or pressure cooker makes cooking proteins easier, but neither is essential.
Optionally, labels or an erasable marker to date the containers. The cue “prepared on X, eat before Y” cuts waste and food-safety doubts.
Storage time by category
In the refrigerator (4°C maximum, check the fridge temperature): cooked meat and fish 3 days, cooked rice and pasta 4–5 days, roasted vegetables 5 days, cooked legumes 5 days, homemade sauces 4 days. Beyond that, freeze in individual portions.
The freezer extends those times to 2–3 months for most cooked foods. Thawing is ideally done the day before in the fridge, not at room temperature.
Some foods do not hold up well to batch cooking: raw leafy greens (they wilt), fried foods (they lose their crunch), mashed potatoes (texture degrades). Prepare those the same day.
Common mistakes
The most common mistake is excessive ambition: 15 different recipes in four hours on Sunday. That pace rarely lasts more than two weeks. Four simple components done well beat ten ambitious recipes abandoned.
The second mistake is having no “wildcard” evening. An unexpected plan, fatigue, a craving for something else — and half the containers end up forgotten. Keeping one evening with nothing prepped protects the whole system.
The third mistake is not revising the grocery list against what is already in the fridge. Cooking what you already have before buying new remains the first anti-waste rule.
How it connects to Daizu
Daizu generates the week's program, aggregates the grocery list by aisle, and suggests recipes that hold up well in storage. For users who practice meal prep, the app saves the steps of organizing the program and the shopping, and leaves the human added value on the cooking itself.
