Peel and cook the potatoes until done.
Preheat oven to 410°F (210°C).
Chop the chive bulbs (ciboules). Combine with the parsley, beef and sausage meat.
In a large pan, heat 1-1/2 Tbsp. (20 g) of butter and add the meat mixture. Cook for 5 minutes. Add the white wine and pepper. Cover and let simmer over low heat for 10 minutes.
Drain the potatoes. Mash them together with 2 Tbsp. (30 g) of butter and enough of the beef bouillon to make a thick purée. Salt and pepper.
Place half of the mashed potatoes into the bottom of a buttered casserole dish.
Top with the cooked meat-wine mixture.
Cover with the remaining mashed potatoes. Sprinkle with breadcrumbs and small knobs of butter. If you’re feeling festive, mix some grated cheese (gruyère, please) with the breadcrumbs.
Bake 20 minutes.
Since you’ve max-ed out your protein, carbohydrate and (unless you’re French, Italian or Spanish) wine quotient for lunchtime, accompany with a side salad.