This is a Lyonnaise thing I actually remember having there, and loving, though I wasn't entirely certain what it was made out of. This month's Food and Wine has a recipe for it which I made a batch of last night for guests. Everybody loved it. They suggest pureed cottage cheese or quark: I used the former, a low fat organic version, and strained the cheese first thinking I could add moisture back but would never get it out if the cheese was too soupy (whatever happened to the dry cottage cheese of my childhood?--I bought some cottage cheese a few weeks ago that hardly had any curds in it, it was all cream)
Mix:
1 16 oz container low fat cottage cheese, strained and pureed
1 tablespoon finely minced shallots
2 tablespoons finely chopped chives
2 tablespoons chopped fresh tarragon or any other chopped fresh herbs you'd like to play with
1 tsp white vinegar
salt & coarse ground black pepper to taste
Spread on thinly sliced grilled bread (I used sourdough, which really popped the cheese flavor).