I'll reply here so everyone can see the response.
Oats are available in a variety of organic stores in Taipei. The range of oats available is actually quite good. The foreign supermarkets also carry oats. Cheap protein powder is what most people seem to want (hello cheap Chinese whey) and that's readily available at Costco. You can also get protein at Wellcome supermarkets although I can't vouch for the taste.
For weight gain, a link like this is good: gainingweight.info/20-weight ... e-recipes/
Weight gain shakes aren't hard to make. Any combo of whole milk, protein powder, fruit (especially bananas), honey, peanut butter, etc. that is blended will work.
For our services, the PM and email button is just below my name in my posts and our website is in the signature. Thanks.