There's a long thread here:
https://www.thehomebrewforum.co.uk/threads/red-wine-concentrate-substitute.72829/
But you can get 2 x 27 bottles from a 1Kg pack so you'd use 110g- 120g for 6 bottles.
https://www.thehomebrewforum.co.uk/threads/red-wine-concentrate-substitute.72829/
But you can get 2 x 27 bottles from a 1Kg pack so you'd use 110g- 120g for 6 bottles.