FAO Schwarz is a popular toy maker. They have a machine which is designed to make yogurt for babies.
Features
4 glass yogurt jars with lids
BPA-free materials
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Features a lighted on/off button
Makes yoghurt in 8 to 12 hours
4 jars, lids and cover are top-rack dishwasher safe only
Review
This makes very limited volume yogurt.