This sauce is superb. When we first served it, with vegetables and lamb, a family guest couldn’t get enough. We had intended the flavored mustard for the vegetables, but he kept spreading it on the lamb as well.

Use for vegetables: carrots, potatoes, turnips, cauliflower,  broccoli, cabbage. It is also excellent with fish, lamb, and pork.

Lemon juice is what lifts this out of the ordinary. May be prepared ahead.

Place the mustard in a bowl. Beat in olive oil gradually, using whisk or fork. When olive oil is incorporated, stir in the other ingredients. (For a large quantity, use a food processor.)

If the mixture sits for a lengthy time, taste before serving, refreshing with lemon juice if necessary.