Flaky French Hard to pronounce Easy to eat

I can be your warmth on a winter night, yet your greatest danger in a dry forest.

In days of yore, a chalice bright, dost holdeth the nectar of night. As knights doth await, their thirst to sate, for jousts or in festive delight.

I’ll mend your clothes if torn with holes, I’ll fix a junkies shaky woes. If I’m dropped in a stack of hay, you’ll never find me down below. What am I?

Two tiny friends upon the table, One is white and one is sable. Shake us gently, sprinkle light, We make your dinner taste just right. Though small we are, our flavor's bold, A pinch of us is worth its gold. What are we?