I am eating my oatmeal right now and a nice scoop of Bulgarian yogurt would probably be good on it.  Perhaps you could bring some Bulgarian yogurt and a Bulgarian sheep to Walla Walla and then I could make some too... 
Your Shady Lawn Creamery grandfather couldn't eat yogurt because his 1950's University dairy science tasting courses taught him that the fermented sour taste occurred when dairy products had gone bad!!!