How does scaling the servings work?

Every recipe stores a base serving count. When you change the target servings, the tool multiplies each ingredient by target ÷ base. So a recipe written for 2 that you scale to 5 multiplies every quantity by 2.5. Fractions like a half teaspoon are rounded to readable amounts so you are not left measuring 0.83 of a cup.

How is the shopping list built?

It walks through every recipe in your meal plan, scales each ingredient to the servings you chose, then merges identical ingredients that share the same unit so their amounts add up. The result is grouped into supermarket aisles like Produce, Dairy and Pantry so you shop in one pass instead of zig-zagging the store.

Why are ingredients with the same name not always combined?

Ingredients are merged only when both the name and the unit match. "200 g flour" and "1 cup flour" use different units, so they stay separate rather than being added together incorrectly. Keep units consistent across recipes if you want them to combine.

Can I paste an ingredient list instead of typing each line?

Yes. In the recipe editor, choose "Paste many" and drop in one ingredient per line, for example "200 g spaghetti" or "2 cloves garlic". The tool reads the number, the unit and the name, and even guesses the right aisle for each.

Is my data saved if I close the tab?

Yes. Every recipe, meal plan and the items you have ticked off are stored in your browser using localStorage, so they survive a refresh or closing the tab. You can also export everything to a JSON file as a backup, or import it on another device.

Does anything get uploaded to a server?

No. The entire tool runs inside your browser. Your recipes, plan and shopping list never leave your device, there is no account, and it keeps working with no internet connection once the page has loaded.

Recipe Manager — Gera Tools

A recipe manager that does the three jobs a home cook actually needs: keep your recipes in one place, scale the ingredients to however many people you are feeding, and turn a week of cooking into a single, well-organised shopping list. It is built for anyone who collects recipes from all over — a parent batch-cooking for the week, a flatmate splitting dinners, or someone halving a recipe that only comes “serves 6”. Every recipe stores its ingredients (quantity, unit and name), the base number of servings, the cooking time, tags and the method steps, so the whole thing lives next to your stove instead of scattered across screenshots and bookmarks.

How it works

Each recipe is written for a base serving count — the number of people the quantities were intended for. When you add a recipe to your meal plan and pick a target number of servings, the tool computes a scale factor of target ÷ base and multiplies every quantity by it. Amounts are then rounded sensibly: large gram weights become whole numbers, and small spoon and cup measures snap to friendly fractions like a half or a third rather than awkward decimals. Ingredients marked with a quantity of zero are treated as “to taste” and left out of the maths.

The shopping list is where it pays off. The tool gathers every ingredient across your whole meal plan, scales each one, then merges items that share the same name and unit so their amounts add together — three recipes that each want garlic end up as one line. Those merged items are sorted into supermarket aisles (Produce, Meat & Fish, Dairy & Eggs, Bakery, Pantry, Frozen, Spices), with the aisle guessed automatically from the ingredient name and overridable in the editor. You can tick items off as you shop, copy the list to your phone, or download it as a text file. Everything is saved in your browser, and you can export the whole collection to JSON for backup.

Example

Say you save a tomato pasta written for 2 servings and a roast traybake written for 4. For a dinner party you add both to the plan and set the pasta to 5 servings and the traybake to 6. The pasta’s “200 g spaghetti” becomes “500 g spaghetti” (a ×2.5 scale), the traybake scales by ×1.5, and because both recipes call for garlic in cloves, those cloves are added into a single Produce line. You end up with one tidy list grouped by aisle, ready to tick off — no mental arithmetic at the supermarket.

Every figure is calculated in your browser. No recipes, plans or shopping lists are ever uploaded or stored on a server.