Finnish Mustard, Which Goes With Everything! - cooking recipe

Ingredients

1/3 cup hot English mustard powder
1/2 cup superfine sugar (caster sugar)
1 teaspoon salt
1 cup fresh cream (pouring cream)
1 tablespoon olive oil
2 tablespoons apple cider vinegar or 2 tablespoons white balsamic vinegar
1/2 lemon, juice of

Preparation

Mix the mustard powder, sugar and salt together in a bowl. Squash out any lumps with the back of a spoon.
Mix the cream, oil, vinegar and lemon juice in a small saucepan.
Add the mustard powder mix to the pot, stir constantly with a whisk or spoon, and bring to the boil.
Simmer 7 - 8 minutes, stirring very often.
Remove from heat when it darkens and thickens.
Cool, but stir now and then while it's cooling. Pour into a glass jar, but two smaller bottles are better. Keep in the fridge.