Fill in the blanks by selecting the correct word from the bracket and complete the given paragraph.
(characterisitic taste, Lactobacilli, Xanthamonas spp., lactic acid, dense consistency, acetic acid, 2:1,Streptococcus thermophilus, 1:1)
For preparation of yoghurt, milk is boiled and once it cools to warm temperature, bacteria such as Lactobacillus delbrueckii and `"____"` are added to it in `"_____"` proporation. `"_____"` is formed due to Streptococcus that makes the proteins to gel out and thus give `"______"` to the yoghurt. Acetaldehyde like compounds are formed due to `"_____"` that gives `"______"` to the yoghurt.