450 Chapter 17
duced by straining or centrifuging some of
the whey from yogurt or by reconstituting
dry or concentrated ingredients and culturing
them to create a high - solids (22% to 26%)
fermented product. The fat content can be
treatments destroy the live and active nature
of yogurt, which may be an essential con-
sumer attribute.
Greek yogurt. Greek - style yogurt is typi-
cally heavy bodied and viscous. It is pro-
Figure 17.5. Process fl ow diagram for the manufacture of plain yogurt and fruit - on - the bottom style yogurt.
Skim milk, Low-fat
milk, Cream , Nonfat
Dry Milk, Condensed
Skim milk, Stabilizer,
Sugar
Yogurt Mix-
Standardize to
10-12% MSNF,
0-3.25% fat, 8% sugar
0.7% stabilizer
Pasteurize at 97°C
for 10 min
Homogenize
at 1500 psi, 60°C.
Cool to 45°C
Mix tank , 45°C.
(Do not set)
Fill Cases and
Palletize
Incubator - 45°C
Hold to pH 4.5
~3 hours
1% Starter /
frozen
concentrate
Package in cups.
Fruit on the bottom ,
Yogurt on top
Blast cool and store
at 5°C
Fruit Preparation
Yogurt-
Fruit-on-the Bottom
style
Package in cups
Incubate at 45°C
Hold to pH 4.5
Cool to 4°C
Plain Yogurt