Yogurt with fruit Ayurveda and food combining theory, don’t advise mixing any sour fruits with dairy as it can diminish digestive fire, change the intestinal flora, produce toxins and cause sinus congestion, cold, cough and allergies. Ayurveda suggests avoiding congestive and digestive fire dampening foods like cold yogurt mixed with fruits. However, if you can’t resist the temptation of a yogurt parfait, there are ways to make it more digestion friendly. First of all, go for a room temperature natural unflavored yogurt. Secondly, mix a little bit of honey, cinnamon, and raisins instead of sour berries.