The concentration of milk through evaporation is the most commonly employed unit operation for the pro- duction of a wide array of traditional and industrial dairy products. Major problems associated with thermal evapo- ration are a loss of aroma, flavor and color change. Ohmic heating (OH) has an immense potential for rapid and uni- form heating of liquid, semi-solid and particulate foods, yielding microbiologically safe and high-quality product. The effect of ohmic heating on physico-chemical, rheo- logical, sensorial and microbial properties during concen- tration of cow milk, buffalo milk and mixed milk (50:50) was studied and compared to conventional evaporation. OH significantly increased free fatty acids (FFA), apparent viscosity, hydroxymethylfurfural (HMF) content, instru- mental color values i.e. redness (a*) and yellowness (b*) values. However, pH value and whiteness (L*) of the concentrated milk decreased significantly. OH caused a drastic reduction in microbiological counts and treated milk can be kept for a longer period.