In a bowl mix together the yeast, warm water and Fromage Frais and whisk well. Leave to rest and allow the yeast to become active.
Mix all the other ingredients together in a large bowl.
Add active yeast mixture to the other ingredients and whisk well.
Divide the mixture equally between two silicone loaf trays and sprinkle with the sesame seeds (optional). Bake in a hot oven (200C Fan Oven) for 10 minutes. Reduce temperature to 180C and cook for a further 20 minutes. Leave to cool slightly before removing and placing on a wire cooling rack.