The Stock I Make From a Bag of Trash

Well — not trash. Scraps. But it starts as a gallon zip bag in my freezer, and it might be the most useful thing in my whole kitchen.

Here's why it matters. A cup of regular canned chicken broth runs about 860mg of sodium. My homemade scrap stock? About 40mg a cup — and that's just the sodium nature put in the vegetables. When I first went no-salt, broth was one of the hardest things to replace, because it hides in everything — soups, rice, sauces, gravy. Making my own put all of those back on the table.

THE SYSTEM

I keep gallon zip bags in the freezer, labeled by type: Veggie, Poultry, and Beef/Pork. Separate bags, because mixed scraps make muddy-tasting stock. Every time I cook, the scraps go in: onion ends and skins (the skins give the finished stock a beautiful golden color), carrot peels and ends, celery ends and leaves, leek greens, mushroom stems, herb stems, and chicken backs, necks, wing tips, and leftover carcasses. I wash my vegetables with a simple brush and water before I peel, so the peels go in clean. Skip anything moldy. Warning: go easy on cruciferous vegetables — broccoli, cabbage, cauliflower, and Brussels sprouts. A little is fine, but too much makes stock bitter and sulfury. The bags keep fine for about three months. When a bag is full, it's stock day.

THE MAKING

Dump the frozen scraps straight into a pot — no thawing — and cover with cold water (about 4 quarts). Bring it to a bare simmer, never a hard boil; boiling makes stock cloudy. Vegetable stock: 45–60 minutes (longer is not better — the vegetables turn bitter and flat). Chicken stock: 3–4 hours, skimming the foam in the first half hour; chill it and the fat lifts right off the top. Strain without pressing the vegetables. And the most important rule in my kitchen: no salt in the stock, ever. Season the dish, never the stock.

FREEZING IT

Ice cube trays — about 2 tablespoons each, perfect for pan sauces. Silicone muffin cups — half-cup portions. Quart containers — leave an inch of headspace; it expands. Label with the type and date, and use within about six months.

That's it. A bag of scraps, a pot of water, and the foundation for half my cooking — at 40mg a cup instead of 860.

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