sherry peppercorn sauce

since years I'm struggling with making tasty light flavored sauces, which don't overpower my dishes. Time to try to write recipes down, which actually work

lets call it a simple peppercorn sauce

1/4 cup sherry
1 cup heavy whipping cream
1 qt beef stock
1 tbs flower
1 tbs butter
2 tbs pepper corns
some salt

combine butter and flower over medium heat to a roux
lets it sit for a couple of minutes
add hot stock
simmer and skim for 30 minutes
add whipping cream
add pepper corns
add salt
simmer another 30 minutes
stir in sherry

serve with steak.

This should cover 4-6 people