Plain full-fat yoghurt can be used as a substitute for crème fraîche in ... is sold in tubs and has a longer shelf-life than double cream. Store it in the fridge for a couple of weeks and ...
At Vinnies I will often use creme fraiche or mascarpone as an alternative when creating desserts that would normally call for whipped cream. Heat oven to 180C. Wash the rhubarb, then cut into batons.