Type of mustard seed: Brown. Heat level: High. Use: As condiment for big, meaty sandwiches. Amping up the natural heat of mustard seeds, spicy brown mustard is aptly named. It's made with brown ...

A beloved local brand, Weber's Mustard, gets its main ingredient, mustard seed, across the border. President Trump’s 25 percent tariff on Canadian imports could be difficult for the company.