Mushroom sauce on fries

I love fries, too much for my own sake. I think fries are great with anything, curry, tomato sauce, chili, mustard and cream. And on this particular occasion, mustard with soy cream and mushrooms. When using frozen mushrooms, brace yourself water is coming, to your sauce that is.

Sautée:
1/2 small Onion, diced
1 Tbsp Olive oil
Add:
250g frozen Mushrooms (half a pound)
1/2 tsp Salt
Leave it at medium heat for at least 5 minutes, the mushrooms will take a while to cook. Then dispose of the excess liquid. Return to the heat and add:
1 Tbsp Mustard
4 Tbsp Soy cream
Stir, and enjoy on top of fries. I know I did :>