I started a batch of this last night, just in a demijohn though
I went with:
4l apple juice
600g pack of rhubarb
1 clump of ginger, probably 100g
100g sugar
2tsp of wilko pectolase
1 sachet of wilko cider yeast (GV-13)
1 cup of black tea
My OG was 1.049 at 20C and it's fermenting away nicely!