I go with 2.5% acid content (5 % diluted 1:1, or 7.5% 2:1 (water/vinegar)), with 5 min processing in boiling water for 1/2liters/pints. I mix in other vegtables, carrots, broccoli, cauliflower, garlic, onions, etc. Last year I aslo started using okra, and I'll be doing a lot more of that this year. My favorite peppers for pickling are jalpenos, serranos, cayennes (for taste, not eating), various hot wax types, bolivian rainbows, and rocotos. I made some nice multi-colored rocoto pickle using red, orange, and green rocotos (plus onion) last year. Tom