Yep, the recipes are scalable. Works both ways. A 5 gallon batch to a 2.5 gallon batch is just cutting everything in half. You can input the 12L recipe in a calculator Brewer's Friend
for instance, take note of the metrics, OG/FG/IBU, then triple the ingredients and see if it's the same to make sure.
Primary: Tri-Peppered Saison
Bottled: Gin and Tonic IPA
Kegs: Dark Skies Black IPA Redux, Gin and Tonic IPA
2013 Previous: Sunrise Honey Rye Pale Ale, Dark Skies Black IPA, Sunset Orange Kolsch, All Hallow's Eve Pumpkin Ale, Raining Hops and Dogs IPA
Dark Skies Black IPA - 2nd Place at a local comp. Score of 39 from a BJCP judge
GT Keezer Build