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Whey ingredient icon

Whey

Whey is a liquid byproduct produced during cheese and cottage cheese manufacturing, containing proteins, lactose, and minerals. It has a slightly sweet taste and light yellow color, and is used in baking to increase dough rise, in fermented dairy drinks, and as a base for marinades. When selecting whey, it is important to check the expiration date and ensure that the whey does not taste bitter, as this is a sign of improper storage or product spoilage.

About

Whey is a liquid that remains after milk curdles during the production of cheese or cottage cheese. For a long time, many chefs treated it as waste, but modern cuisine has reassessed this product. Whey contains proteins, lactose, and minerals that make it a useful ingredient for both sweet and savory dishes.

Taste and Texture

Whey has a mild, slightly sweet taste with a barely noticeable sourness. The consistency is liquid, transparent or slightly turbid depending on the production method. The milk aroma is delicate and does not overpower other ingredients in the dish. It is this subtlety that makes whey a universal component.

Kitchen Application

In baking, whey works as a substitute for milk or part of the liquid in dough — pancakes, fritters, and muffins become more tender and fluffy thanks to the proteins in its composition. It is added to breading for meat and fish to make the crust crispy. In cooking, whey helps soften tough meat during marinating.

Whey beverages are a classic option for a healthy breakfast or snack. It is mixed with fruit juices, honey and spices are added. Whey is used in creams and sauces to add lightness. In bread making, it improves dough structure and extends the freshness of finished bread.

Selection and Storage

Whey comes in two types: sweet (from rennet coagulation during cheese production) and sour (from the fermentation process during cottage cheese production). Sweet whey is more versatile for baking and beverages, while sour whey is better suited for marinades and sauces. When purchasing, pay attention to the packaging date — freshness is critical for taste and nutritional value.

Whey is stored in the refrigerator for 5–7 days in an airtight container. It freezes well — it keeps in the freezer for up to three months, which is convenient if you bake infrequently. Thaw slowly on a refrigerator shelf to preserve protein structure. Before using, always check the smell — a sour or unpleasant aroma indicates spoilage.

Nutrition

per 100 ml

Calories
20 kcal
Protein
0.8 g
Fat
0.2 g
Carbs
3.5 g

Measures and weight

1 tbsp
15.5 g
1 tsp
5.2 g
1 cup
257.5 g

Measure calculator

Weight
100 g
Calories
19 kcal

How to store

Shelf life

Fridge · Whole
7 days
Freezer · Whole
6 months
Freezing
Suitable for freezing
Thawing
In the fridge

Signs of spoilage

  • Off smell
  • Mold

Times are approximate. Packaging instructions take priority.

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