OB STUDIO / A SMALL TOOL FOR SDG 12

USE
FIRST.

Leftover rice? Half a tomato? The last bit of chicken? Put them in. Get a meal idea now—or a two-day plan that uses each ingredient once.

OPEN THE KITCHEN
01 / THE KITCHEN

What's left over?

Add what you actually have. Nothing is prefilled. Your list stays in this browser.

ADD FOOD01

For cooked leftovers, this date and storage check matter. The app cannot verify food safety.

YOUR FOOD

Kitchen list 0

Your kitchen is empty. Add one ingredient to begin.

02 / THE PLANNO INGREDIENTS YET

A meal starts with
what you've got.

Add food on the left. Use First will match it to simple meals and plainly show anything else needed.

How it chooses: Meals using more of your listed food rank higher. Water and a little cooking oil are assumed; other missing ingredients are named. Cooked leftovers older than four days are kept out of suggestions.

03 / MAKE IT COUNT

Tonight. Tomorrow.
Nothing counted twice.

Use the whole kitchen list to make a short plan. The planner only books meals you can make with what you entered, gives older cooked food priority, and shows anything it couldn't use.

DAY 01 / TONIGHT

Waiting for your kitchen

Add your food above, then build a plan.

DAY 02 / TOMORROW

Waiting for your kitchen

Each ingredient is assigned to at most one meal.

A plan is a suggestion, not a record that food was eaten. If storage or freshness is uncertain, discard the plan and follow food-safety guidance.

04 / THE REASON

Food waste starts
before the bin.

The UN says households produced 60% of the world's food waste in 2022. Sustainable Development Goal 12.3 calls for halving food waste at retail and consumer level by 2030. Making a plan around what is already at home is a small, repeatable way to address that problem.

The US EPA recommends keeping a list of food to use up and planning meals around it. This tool does exactly that; it does not estimate carbon saved or claim a planned meal was already eaten.

BEFORE YOU COOK

Food safety comes first.

Refrigerate cooked leftovers within two hours—or one hour when it is above 90°F / 32°C—and keep them cold. Use refrigerated leftovers within three to four days and reheat to 165°F / 74°C, checked with a food thermometer. If storage is uncertain or food seems spoiled, do not use it just to avoid waste. This app cannot assess freshness or replace the label and local food-safety guidance.

USDA: LEFTOVERS & SAFETY ↗