Crafting your own mustard is far from a high-flying kitchen feat. Just grab some mustard seeds and good quality dark ale. Want more heat? Use more brown mustard seeds than yellow ones.
1/2 cup (125 mL) dark beer1/4 cup (60 mL) black mustard seeds1/4 cup (60 mL) yellow mustard seeds1/3 cup (80 mL) cider or balsamic vinegar3 Tbsp (45 mL) yellow mustard powder1 Tbsp (15 mL) honey or pure maple syrup1/2 tsp (2 mL) allspice1/2 tsp (2 mL) sea salt1/4 tsp (1 mL) freshly ground black pepper
Combine all ingredients in glass jar and secure lid. Let mixture sit at room temperature overnight to soften seeds and allow flavours to combine.
Transfer mixture to food processor and process until seeds are coarsely ground and mixture thickens to desired consistency. If necessary, stop machine as you blend to wipe down the sides.
Store in refrigerator for up to several months.
from "Cooking with Mustard", alive #365, March 2013