Plan your food budget with the right numbers

Give your dinner budget a clear job

Start by listing the spending you want to control. Dinner ingredients are one part of a grocery trip; breakfasts, lunches, snacks, household products and treats may also need money. A seven-dinner plan should not be presented as the cost of feeding everyone for every meal.

KaiPrep’s planning budget applies to estimated ingredient usage. Its shopping list shows the amounts your recipes need, with purchase estimates only where enough information is available. Neither is a guarantee of the amount charged at checkout.

Ingredient-use cost is the portion a recipe uses

If a recipe uses part of a bottle of oil or part of a block of cheese, an ingredient-use estimate relates to that portion, not necessarily the whole product you must buy. For example, a dinner using 60 g cheese needs only that amount in the pan, even if you buy a larger block. Comparing recipe estimates makes sense only when the quantities, units and prices refer to the same kind of ingredient.

In the sample week, one dinner uses 160 g dry pasta and another uses 160 g. The combined requirement is 320 g dry pasta. That arithmetic tells you how much the recipes use; it does not tell you which pack is on the shelf or what it costs today.

Follow the pasta from recipe to trolley

Use the label and shelf price of the product you are actually considering. This worksheet supplies no supermarket prices or assumed pack sizes. Keep all amounts in grams for this example.

Recipe amount: 320 g dry pasta

That is two 160 g requirements in the sample. A cooked-pasta weight cannot be substituted using a guessed yield.

Usable amount at home

Record compatible dry pasta you can use. The amount left to buy is 320 g minus that amount, with a minimum of zero. Do not deduct it twice.

Actual pack amount and price

Write the pack weight in grams and its shelf price in NZD. If the product or price is unknown, leave the price unresolved rather than entering zero.

Packs and remainder

For a fixed pack, divide the amount left to buy by that pack weight and round up to a whole number of packs. Record what remains after the recipes use their share.

Recipe-use illustration: shelf price × 320 g ÷ pack weight in grams, for the same product. Purchase illustration: shelf price × whole packs needed after your cupboard check. These answer different questions; food already at home can still have an ingredient-use cost.

The generator’s weekly budget remains an estimated ingredient-use budget. Eligible shopping pantry deductions do not turn it into a checkout-spending guarantee. Manual cupboard checks are available to everyone; in-app pantry inventory and eligible deductions are Plus features.

Checkout cost depends on purchasable products

Work from the combined requirement to the actual products available. A fixed pack may leave a remainder; loose produce or variable-weight meat can be purchased differently. A price per kilogram helps you compare products; it does not mean you must buy a kilogram.

Compare the package’s total price, quantity and unit price together. Choose quantities you can use and store safely, rather than assuming a larger pack is better for your household. If you change a product, check that its form and ingredients still suit the recipe.

Unknown prices need an allowance, not a zero

Some ingredients use catalogue reference prices, others use estimates, and some have no usable price. None of these is a promise of today’s shelf price. An unknown price is not proof that an item is free.

The app separates its ingredient-use figure from “Estimated purchase cost” or, when coverage is incomplete, “Known-price purchase subtotal”. Read the priced-item coverage beside it: a subtotal covering only known prices is not a complete basket estimate. Before shopping, check unpriced items and allow for whole packs. Selecting a supermarket does not supply the missing current shelf prices.

Use ingredients at home without hiding their role

If you already have enough of an ingredient, you may not need to buy it on this trip. It still belongs in the recipe, and a recipe-use estimate can still include it. Check the actual quantity and condition rather than marking an item off because you remember buying it once.

Eligible Plus pantry deductions can reduce shopping requirements for compatible stored ingredients. Free does not include pantry inventory or deductions. The public sample list is an illustrative manual checklist, not a change to those entitlements.

Make a practical adjustment when the shop looks too expensive

1. Find the items that still need a price check before deciding which meal is too expensive.
2. Check whether a suitable smaller quantity is available, without assuming stock or pack sizes.
3. Look for a meal using more of an ingredient already needed elsewhere in the week.
4. Check the method, portions, allergens and cooking state before substituting.
5. Recheck the combined list after any change; do not subtract a shared ingredient twice.

The aim is a better-informed choice before you pay, rather than a promised saving. A meal that uses a little of an unfamiliar ingredient may look inexpensive on paper but still mean buying another whole product. Try the seven-dinner example, read how to consolidate a list, or compare KaiPrep Free and Plus.