Typical costs: Having a contractor level and prepare the area then pour a concrete slab ranges from $1,000-$2,000 for a 10x20-feet; $4,000-$6,000 for 80x20-feet; and $5,000-$10,000 for 100x100-feet. Smaller projects cost more per square yard because of minimum travel, labor and equipment costs.
What makes yogurt - well, yogurt? The words live and active cultures refer to the living organisms, Lactobacillus bulgaricus and Streptococcus thermophilus, which convert pasteurized milk to yogurt during fermentation. Note that the milk is pasteurized before culturing to remove any harmful bacteria.
Aside from milk, the main ingredient used in creating either kefir or yogurt are bacteria. These âgoodâ bacteria multiply inside the food to create flavor, texture, and nutrition. Yogurt and kefir use different types of culture starter. Usually, yogurt is made by combining a bit of old yogurt with fresh milk. That old yogurt is the starter.