I am no expert but this is how I built up 2278 to start a 7g batch of this recipe.
1.25l starter with one pack, then
9l (2.5g) batch of 11P lager pitched at 6c, main ferment at 9c (48f?), then use 2/3 of yeast cake to
27l (7g) batch of 12P pilsner knock off pitched at 6c.
(sorry I live in...