Electric Yogurt Maker 7 Pots

Quick Answer: The Electric Yogurt Maker 7 Pots is a small heated appliance that keeps seven individual pots of milk and starter culture at a steady warm temperature. Schools and colleges use an electric yogurt maker for lactic acid fermentation practicals as well as for making yogurt.

Using a Yogurt Maker for Fermentation Practicals

Yogurt forms when lactic acid bacteria, usually Lactobacillus delbrueckii subsp. bulgaricus and Streptococcus thermophilus, ferment the lactose in milk to lactic acid. As the acid builds up, the pH falls until the milk proteins, mainly casein, clump into a soft gel. The bacteria need a warm temperature held steady for several hours, which is what the maker supplies: a heated base under a lidded compartment that keeps the pots warm without further attention.

Seven separate pots make the appliance useful for comparisons. Each pot can hold a different treatment, such as a different milk, a different amount of starter, or no starter at all as a control, while all seven share the same temperature. Students record the time to set, the texture and the fall in pH, measured with indicator paper or a pH meter.

The listing does not give the pot material, pot volume or heater rating. Yogurt makers of this kind are built for food use and usually run at one fixed temperature, so they suit milk fermentations but do not replace a laboratory incubator with an adjustable thermostat.

Care and Food Hygiene

• Wash and dry the pots and lids before and after each use, and keep a separate set for any work that is not a food lesson.
• Never immerse the heated base in water; wipe it with a damp cloth once it is unplugged and cool.
• Stand the maker on a level surface away from draughts and do not move it while the yogurt sets, as disturbance breaks the gel.
• Refrigerate the pots promptly when incubation ends; yogurt left warm keeps acidifying and turns sour and grainy.

Specifications

Practical Uses in Food Science and Microbiology

• Making yogurt from different milks, such as whole, skimmed and plant-based, and comparing set and texture
• Following the fall in pH during lactic acid fermentation at hourly intervals
• Testing starter quantity or incubation time as variables, with an unseeded pot as the control
• Preparing a yogurt smear for Gram staining to observe rod-shaped and spherical bacteria under the microscope

Why Choose LabEquip

Food technology teachers, home science departments and microbiology tutors use a yogurt maker as a simple way to run several milk fermentations side by side at one temperature. LabEquip lists this appliance in General Lab Products. For bacterial plates that need a set temperature, the educational incubator is the closer match, and PCA agar plates extend the lesson into counting bacteria.

Frequently Asked Questions

Can the yogurt maker be used as a laboratory incubator?

Only for milk fermentations and similar food cultures. It holds one warm temperature suited to yogurt bacteria and has no adjustable thermostat, and its pot compartment is not designed for Petri dishes, so bacterial plates belong in a proper incubator.

Why does milk turn into yogurt?

Lactic acid bacteria ferment lactose to lactic acid. As the pH falls towards about 4.6, the casein proteins in milk lose their stability and link together into a soft gel, which is the set yogurt.

How long does yogurt take to set?

Usually several hours, depending on the starter, the milk and the temperature. Checking one pot at intervals, without disturbing the others, lets students record the time to set as a result.

Can students eat the yogurt they make?

Only if the whole activity was run as a food lesson, with clean food-only equipment and fresh ingredients. Yogurt made in a science laboratory, or in pots used with stains or reagents, must not be eaten.

What makes a good control for a yogurt experiment?

A pot of the same milk with no starter added, incubated alongside the others. It shows that the thickening and the fall in pH in the other pots come from the added bacteria and not from the warmth alone.

Can plant-based milks be fermented in the same way?

They can be tested, and comparing them makes a good investigation. Many plant milks contain little or no lactose, so they may set weakly or not at all unless a sugar is present, which shows that the bacteria need a fermentable sugar.

Last Updated: September 2026