Tasty I haven't made it but can answer some of your questions.
Tamari is Japanese soy sauce - Tamari is a japanese soy sauce made from the liquid which drains from miso[fermented soybean paste]. Other japanese soy sauces are made from fermented wheat paste.
You can use dark soy sauce [if you are alright with gluten] or a gluten-free soy sauce. True tamari is sold in the natural/gluten-free aisle of coles/Woolworths. GF soy is also in the sauce section.
Most milk in the supermarkets is pasteurised to my knowledge.
Cold pressed almond oil - I would check out a health food store for that one.
Rice vinegar is freely available in supermarkets.
Not sure about loose green tea, check out the supermarkets and head for the health food store if it is not available there.