ANY kind of food or drink other than water -ok to mix with mms for small dogs?

Does anyone know of one? It seems I read in my book that one can buy a tester to check compatibility, but I don't have one now.
I recall that a liquid stevia's in the book, but I don't know the brand. I'm thinking about that for myself...not sure if the dogs would go there.
Some people food or pet food others find to be ok would be great to know about.
Coke is said to work, but wouldn't want that for the dogs.
I think they aren't too picky though.
Any ideas?

Thank you! I regret I didn't see this and thank you before. I'm putting it in the water at 4 drops per gallon and it seems to be helping, but I need to do more.
I'm wondering if the plain MMS diluted in water will stay at the same concentration or if most dissipates after a day, similarly to how chlorox does. (very different compound, I realize!)
I will post a question at the animal page.
Thanks again!