Thanks very much for your input, Joakim. It's just the kind of advice I need. I live in the Philippines, and if there's something that's abundant here all year round is sun and heat. Hopefully, I can mature my soy sauce in less time. I will study carefully all the procedures so far presented and try to condense everything into a master recipe. I will probably try to use a 25% brine (ie. 250g salt for every liter of water), ferment in opaque containers, and skip the roasting. Could the roasting have disabled some wheat enzyme or protein crucial to the process? Your miso project sounds interesting. I hope you will let us know how it turns out. I can buy miso (both the Japanese and Filipino styles) here but I'm curious to see how your home-based effort turns out. Like you, I find culinary experimentation fun and extremely fulfilling. Thanks very much again! Nathan