Although you can refrigerate or freeze the separate ingredients, don't prep until you're just about to serve them to give you time to toast the blinis and avoid the crème fraiche making them soggy.

Source: https://www.dailymail.co.uk/femail/food/article-12786757/Stir-Sunday-recipes-perfect-Christmas-pudding.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

Cold pasta or rice salad with lots of veggies, or cold potato salad with creme fraiche rather than mayonnaise, and lots of herbs, are ideal.

Source: https://www.thesun.co.uk/health/23343505/eat-your-favourite-carbs-lose-weight-hack/

Courgette, creme fraiche and pecorino lasagne recipe by Mattie Taiano.

Source: https://www.theguardian.com/food/2023/mar/26/20-best-sunday-lunch-dinner-recipes-nigella-lawson-joe-woodhouse-georgina-hayden

Eclectic items may include barbecue chips with pork shoulder, bamolina barbecue sauce and pickled peppers; and mushroom braised beef cheeks over pasta with burnt shallot croutons and garlic creme fraiche.

Source: https://www.coloradohometownweekly.com/2023/05/30/travel-go-wild-for-walla-walla-washington/

Lots of recipes call for crème fraiche which is similar to sour cream but smoother and richer.

Source: https://www.ksro.com/2023/07/22/cold-soups/

The dish was inspired by a baked potato, but instead of sour cream, we use creme fraiche and top it with caviar and a spritz of vodka.

Source: https://www.forbes.com/sites/alywalansky/2023/08/05/11-spud-centric-dishes-to-enjoy-on-national-potato-day/