Baking Help!

Plain Flour is Farine de Ble
Selfraising is Farine De Gateaux

It all depends on what you are making. What recipe are you wanting to do?

You will find self-raising flour in Carrefour labelled as farine fermentante.

Plain flour is NOT self raising flour (farine fermentante)!

"Plain flour is NOT self raising flour (farine fermentante)!"
I realise that but was providing relevant information after ANON's remark that self-raising is "farine de gateaux" which might be what the dictionary says but isn't how it is labelled in at least Carrefour.

OK Sorry, I was just trying to be helpful.

I buy self raising flour as this in my local shop:
https://www.francine.com/les-bons-produits/les-farines/farine-pour-gatea...

But as the OP is looking for plain flour, they should just look for "Farine de Ble"

Plain:
https://colruyt.collectandgo.be/cogo/fr/detail_article/14865/everyday-fa...

For cakes & pastry:
https://colruyt.collectandgo.be/cogo/fr/detail_article/14861/boni-select...

For sauces:
https://colruyt.collectandgo.be/cogo/fr/detail_article/1188/boni-selecti...

Self-raising:
https://colruyt.collectandgo.be/cogo/fr/detail_article/19062/eeveryday-f...