Mustard Packets Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

French's is the best-performing mustard packets brand in July 2026, moving 23,000 units across 5 ASINs for 43.4% of Top 10 volume. 365 by Whole Foods Market follows with 8,000 units (15.1%), ahead of HEINZ on 8,000 units (15.1%).

With 6 brands splitting the Top 10 and 73.6% of volume sitting with three of them, this is a concentrated shelf — the leaders hold multiple listings or one very high-velocity ASIN, so a new entrant competes against established review moats rather than an open field. Average selling prices among the leaders run from $2.22 to $9.54, which frames the price band a competing listing has to justify.

Based on July 2026 data, this shortlist surfaces the two kinds of ASIN worth keeping an eye on — the ones that just broke into the Top 10, and the ones growing fastest month over month. Specifically, one ASIN forced its way in: B0GY1K8Z58 booked 4K units at $1.97, with ▲ 400.0% MoM change. On the growth side, B000WG65UG leads positive momentum with ▲ 150.0% MoM growth on 5K units, with B000Z4MHNE close behind at ▲ 100.0% MoM on 2K units.

The two signals carry different weight. A fresh entrant means share has already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date. A steep growth rate works as the earlier warning: it marks demand that is still compounding, usually a month or two before the ranking catches up to it.