I modified this recipe from one offered by the monks who make Chartreuse:
2 C chopped tomatoes
1 big onion, minced
3 T butter
1/4 C green Chartreuse
1/4 C heavy cream
salt and pepper to taste
Sweat the onions in butter with a pinch of salt until mostly soft; add tomatoes for the last 10-15 minutes.
Add Chartreuse and turn off the heat. Let sit for a few minutes, then stir in the cream and serve immediately.
I served this on a grass-fed roast from Kevin Veinotte (ten miles) and boiled new potatoes from the Annapolis Valley (about 70 miles). It was a nice taste, but I thought the tomatoes overpowered the Chartreuse to a surprising extent. I think next time I'll try adding Chartreuse and cream to a simple broth and pan jus mixture. There's something the marriage of chlorophyll and alcohol that just does it for me.