Protein is the hard one. Good low fodmap vegan sources of protein that I know of are:
Peanut protein (e.g. https://smile.amazon.com/dp/B00NQLE5JC/)
Pea protein isolate (though some including me have trouble, ymmv)
Rice protein (probably brown rice protein)
Algae based protein, such as spirulina
Mycelium based protein, such as is in quorn (though most quorn products are neither vegan nor low fodmap)
Quinoa
Wild rice
There are some people who can tolerate more, such as well rinsed and pressed extra firm tofu, or gluten (which is quite high in protein), or canned lentils and beans. None of those work at all for me though. I'm not vegan or vegetarian, but I love the idea and want to support it as best I can.
Found it on Amazon, but I'm sure local health food stores might carry it as well. Here's the link if it helps:
https://www.amazon.ca/dp/B00XV44F2G/ref=cm_sw_r_cp_apa_i_Q-qKFbSMG3YRY?_encoding=UTF8&psc=1
Like any coconut based product, it imparted some "coconuttiness", but it worked well in my particular application.
I found there were so many resources for the elimination (low fodmap) phase and much less for reintroductions. My doctor referred me to a dietitian for the elimination. In hindsight, professional support would have been better at the reintroduction phase. If that is not an option, others have linked free web options and I found the book linked below contained helpful strategies for reintroducing foods.
> LivFit Superfood Organic Cacao Powder
Both off Amazon and my local Wal-mart Neighborhood Market carried it at the time I wrote up this recipe...looks like Amazon still carries it.
I have SIBO and IBS-C. I take some magnesium and 2 of these every night. Works like a charm for my constipation which has been terrible for me historically.
Sooo we actually use one that has spices listed in the ingredients, but can get away with it because garlic and onion reintroductions went just fine.
There are other options if you really want a mustard though and need to avoid "spices," but the ones I've seen are expensive. Like this one (Pommery Dijon): https://www.amazon.com/dp/B07MQW57X7/ref=cm_sw_r_apan_glt_i_PA1RXD7J7A6PY92PT3G1
Tbh if I had to avoid condiments with spices in the list, I would just make my balsamic dressing without the mustard. I wouldn't want to spend the money on a nice mustard. But if it's a nice treat it might be worth it for you, since low FODMAP can be so restrictive.
https://www.amazon.com/Gut-Immune-Connection-Understanding-Between-Immunity/dp/006311836X, lots of emerging science in this book about ASD & gut bacteria correlation. -- I'd recommend the audio book
This mud mask helped clear my face up when I did it. My skin ended up looking so healthy by the time I started reintroducing foods.
Aztec Secret – Indian Healing Clay 1 lb – Deep Pore Cleansing Facial & Body Mask – The Original 100% Natural Calcium Bentonite Clay – New Version 2 https://www.amazon.com/dp/B081FK6L1G/ref=cm_sw_r_cp_api_glt_fabc_A8V24CXA93D1ZMHNDEHP