What can I cook with what I have? The definitive guide.

You opened the fridge. You see chicken thighs, half a red pepper, a bag of spinach with one wilting day left, half a lemon, eggs, the rice you made on Tuesday, and seven condiments. The question is the most common one in home cooking, and the one nobody ever solves cleanly: what can I cook with what I have? Free PDF inside: The Lost Cocktail Codex, 50 pre-Prohibition cocktails, no card.

This guide is the answer in three layers. The mental model, so the question becomes solvable. The apps that actually help (with honest takes on which to pick). And the meals that work with random fridge contents because the technique, not the recipe, is doing the heavy lifting.

Part 1: the mental model

Stop searching for a recipe. Start surveying what you own.

Most cooking advice is recipe-first. Pick a recipe, get the ingredients, cook the recipe. The premise is an empty kitchen and a shopping trip. Your kitchen is not empty. The actual question, the one that ends with takeout four nights a week, is the inverse: what can I make with what's already here?

The shift is from recipe → shopping → cook to inventory → match → cook. The inventory comes first. The recipe is the result of the inventory, not the input.

The lead ingredient is the one in distress

Open your produce drawer. Whatever's wrinkly, soft, or about to turn is the lead ingredient. Not the protein, not the carb. The thing that will be compost in 48 hours if you don't intervene.

That ingredient picks the dish. A wrinkly tomato wants to be roasted. Soft mushrooms want a fast hot pan. A bag of spinach about to wilt wants a soup or a frittata. The vegetable in distress is the recipe brief. Once it is set, the rest of the dish builds out from it.

The protein is automatic

Eggs scale up or down to anything. Chicken thighs forgive almost any pairing. A can of beans is structural for half the world's cuisines. Cooked rice is a base for fried rice, congee, stuffed peppers, or a bowl. You don't research these. They sit in your kitchen already.

The pantry palette is six bottles

Soy sauce, olive oil, vinegar, mustard, honey, salt and pepper. Maybe a few dried herbs and a couple of acids. These six items combine into thousands of dishes. Olive oil + vinegar + mustard is vinaigrette. Soy + honey + garlic is a glaze. Olive oil + lemon zest + salt is a finishing condiment. The same six bottles, three different cuisines.

Part 2: the apps that actually help

The mental model only goes so far at 7pm on a Tuesday when you're tired. The real question is which app, if any, makes the workflow fast enough to beat ordering takeout. Here is the honest 2026 landscape.

SuperCook (free, web + mobile)

Type the ingredients you have, get matched recipes from a wide pool. Free. Reliable. The catch is the typing, especially on phone. Full breakdown here.

Use it if your pantry is small and stable and you don't mind keeping it updated. Skip it if the typing has made you quit before.

Speakeater (Android, free, June 10, 2026 launch)

I built this app, and I will not pretend I didn't. Speakeater takes a photo of your fridge or pantry and recognizes every visible ingredient at once. Recipes that use what's there appear immediately, ranked by what's about to expire. No typing, no scanning, no manual entry. Free with 20 swipes a day. Pro is $4.99/mo or $59 lifetime. How it works. Android download.

Use it if you are on Android and want the photo workflow. Skip it if you are on iOS (until the iOS version ships).

Cooklist (paid)

Auto-imports grocery receipts to track what's in your kitchen. Smart on paper, leaks fresh produce in practice. Why this breaks down.

Paprika ($5 per platform, one-time)

The best recipe library on every platform. Not an ingredient-match tool. Pair it with one of the above.

ChatGPT or Gemini

Upload a fridge photo, ask "what can I make." Works for one-offs. Doesn't replace a real workflow because every session starts from scratch and there is no expiration ranking, no library, no shopping list integration.

Part 3: the meals that always work

If you remember nothing else, remember these eight patterns. Each is a technique, not a recipe. They produce something edible with most fridge contents.

1. Egg + green + carb

Sauté any green you have. Crack two eggs over the top. Eat it on toast, on rice, alone. Five minutes, almost free, almost always good. Works with spinach, kale, leftover broccoli, frilly herb stems.

2. Pan-fried protein + lemon + olive oil

Whatever protein is in the fridge, dry it, salt it, hit a hot pan in olive oil. Squeeze lemon over the top. Done. Works for chicken, fish, tofu, tempeh.

3. Pasta + starchy water + parmesan + the about-to-die thing

Cook pasta. Reserve a cup of starchy water. Toss pasta with whatever wrinkled vegetable, half a stick of butter or olive oil, and a fistful of parmesan. The starch in the water binds it. This is technically cacio e pepe, except the principle works with anything.

4. The fridge frittata

Six eggs, whatever vegetables are wilting, whatever cheese is open. Sauté the vegetables in a 10-inch oven-safe pan. Pour beaten eggs over. Cook 5 minutes on the stove until edges set, then 10 minutes in a 375°F oven until puffed and just set. Slice. Feeds four. Works with anything from a soft red pepper to leftover roasted potatoes.

5. The bowl

Base of leftover rice, grain, or quinoa. Add a protein you reheated. Add three or four toppings (raw cucumber, sliced radish, a quick-pickled onion, sliced avocado, a fried egg). Drizzle: olive oil + lemon, or soy + sesame oil, or tahini + lemon. Bowls absorb mismatched ingredients better than any other format.

6. The soup that uses it all

Sauté onion and garlic. Add whatever vegetables (chopped). Add stock or water. Simmer until tender. Blend with an immersion blender or leave chunky. Cream optional. The end-of-week soup is the most reliable food-waste-killer in any kitchen.

7. The sheet-pan dump

Cube whatever vegetables and protein. Toss with olive oil, salt, pepper, a single dried herb, maybe smoked paprika. Spread on a sheet pan. 425°F for 25 to 30 minutes. Done. Works with chicken thighs, sausage, chickpeas, tofu, cubed potato, broccoli, cauliflower, peppers, zucchini, sweet potato, brussels sprouts.

8. Leftover-protein quesadilla or grilled cheese

Two slices of bread or a tortilla, cheese, leftover protein, anything wilting. Hot pan with butter. The vehicle is bread; the filling is whatever's on its way out.

Part 4: how to actually pull this off Tuesday night

The honest barrier is not lack of recipes. It is the decision fatigue of standing in front of an open fridge at 7pm trying to invent something. The 30-second loop:

1. Open the fridge.
2. Pick the lead ingredient (the one in distress).
3. Match it to one of the eight techniques above, or open Speakeater / SuperCook for a specific recipe.
4. Cook.

Skipping the survey is what kills the loop. Most failed weeknight cooks are people who opened the fridge with a recipe already in their head and got disappointed when the kitchen didn't match. The fix is to flip the order: see what's there first, decide second.

The kitchen has more dinner in it than you think. The shopping list is what's stopping you.

Part 5: the shopping-list reframe

Once you cook from the fridge for two weeks, the shopping list changes. You stop buying ingredients for recipes you want to try. You start buying staples that combine with what's already there. Onions. Lemons. Eggs. Olive oil. The kind of list a grandparent would write.

Less waste. Smaller bills. Same dinner.

The whole point of cook-with-what-you-have is not deprivation. It's the realization that a kitchen with eight to twelve good staples and a few fresh items beats a kitchen with forty random items and no plan. Less stuff, better food.