A quick easy sauce that goes well with steak
Put all ingredients except butter and corn starch in a pot
Heat on medium high until boiling
Lower heat to medium-low for 10-15 minutes until reduced by half, feel free to push some juice out from berries if they don't break down naturally
Strain mixture through a fine strainer, return to pot to keep warm
Finish sauce with butter, if necessary add a little corn starch to thicken