Yellow Mustard Seeds

A jar of crisp bread-and-butter pickles, a batch of homemade mustard, a pot of tangy braised greens: all of them lean on yellow mustard seeds. Toss the whole seeds into pickling brines, temper them in hot oil for lentils and vegetables, or grind and soak them to make your own mustard from scratch. Whole, they are mild and nutty. Crushed and wetted, they turn sharp and pungent.

Yellow mustard seeds are the mildest of the mustard family, gentler than brown or black seeds, which is why they are the base of classic American yellow mustard. Their heat stays locked away until the crushed seed meets cold liquid, so whole seeds keep their punch in the jar for a long time. We pack them whole in Portland: use them as they are for pickling and tempering, or grind fresh when you want that heat.

In American and European kitchens, yellow mustard seeds go into pickles, brines, chutneys, and sausage, adding a gentle tang and a bit of texture. In Indian homes, whole yellow and brown mustard seeds (rai) are dropped into hot oil until they pop, a technique called tempering that blooms their nutty aroma before the seeds meet the vegetables.

Single ingredient: yellow mustard seeds. No salt, no sugar, no preservatives. Naturally gluten-free and vegan.

What is the difference between yellow and brown mustard seeds?
Yellow seeds are the mildest and most nutty, the base for American yellow mustard and most pickling. Brown seeds are smaller, hotter, and sharper, common in Indian tempering and Dijon-style mustards. Use yellow where you want gentle warmth, brown where you want bite.

How do I make mustard from the seeds?
Grind or crush the seeds, then soak them in a cold liquid such as water, vinegar, or beer. Cold liquid triggers the sharp heat, while warm liquid tames it, so use warm liquid or let the ground mustard rest if you prefer a milder result.

Do I need to toast or grind them for pickling?
No. Whole yellow mustard seeds go straight into a pickling brine, where they add mild flavor and a pleasant pop of texture. Toasting or tempering in oil is for cooked dishes, not cold pickles.

Why is my homemade mustard so harsh?
Fresh-ground mustard is at its sharpest right after mixing with cold liquid. Let it rest a day or two and the raw bite mellows into a rounder flavor. A splash of vinegar also softens the edge over time.