Which cream and which milk to use in ice cream

A recipe says “whipping cream” and the chilled shelf offers five tubs with five different numbers on them. Which cream should you actually buy? It is the most common question in homemade ice cream, and it has an exact answer, because ingredient composition is just arithmetic.

What milk brings and what cream brings

Any dairy ingredient brings three things: fat, milk solids non-fat (MSNF) and water. Water is the only component that turns into ice in the freezer, so it is worth judging every ingredient by how much water it drags along with it.

• Cream carries the fat. Fat gives flavour, creaminess and body, and during churning it builds the network that holds the air.
• Milk carries the MSNF — protein and lactose. Protein binds water and holds air; lactose lowers the freezing point.
• Skimmed milk powder is pure MSNF with almost no water. It adds solids nothing else can.

Composition per 100 g

The figures come from zmrzka’s ingredient database (averages from USDA FoodData Central and NUTRIDATABAZE.cz).

Two things stand out. Cream has less protein than milk, not more — the richer the cream, the less milk solids are left in it. And sweetened condensed milk carries roughly 44 g of added sucrose per 100 g on top of its 11 g of lactose, so it is a sugar as much as a dairy ingredient.

What is sold in Slovakia and Czechia

The names on the tub are not marketing — they are legal categories. They simply sit at different thresholds in each country.

For milk, EU Regulation No. 1308/2013 applies in both countries: whole milk has at least 3.50 % fat, semi-skimmed 1.50–1.80 % and skimmed no more than 0.50 %.

What happens when you swap cream for milk

Take our no-egg vanilla ice cream: 450 g milk, 400 g cream 33 %, 35 g skimmed milk powder, 140 g sugar and 30 g dextrose. The target range for cream ice cream is 10–18 % fat and 35–44 % total solids. Here is the same mix with a single ingredient changed:

Swapping 30 % for 35 % therefore breaks nothing — it moves the fat by under two percentage points and the recipe stays inside the range. Cooking cream and plain milk do not: half to four fifths of the fat disappears and the solids fall below the target for the type. The result is not unusable, it is simply a different ice cream — milkier, icier, with less body.

Going the other way is gentler. For a lighter version, use 280–300 g of cream instead of 400 g and make up the weight with milk: fat drops to 10.7–11.2 % and solids to 36.1–36.6 %, still inside the target range.

Milk powder cannot replace fat

The temptation is obvious: if the solids have gone, add milk powder. We ran the numbers — even at 100 g of skimmed milk powder instead of 35 g, total solids only climb back to 33 %, the fat stays at 2.7 % and MSNF shoots up to 15.1 %. That is just short of the point where lactose crystallises and the ice cream turns sandy (the risk is usually quoted above about 16 % MSNF).

Milk powder fixes body and water binding, not fat. That is what it does in fior di latte gelato: leave it out and MSNF drops from 10.1 % to 6.7 % and total solids from 35.8 % to 32.3 % — a thinner, icier gelato with exactly the same fat.

Lactose-free milk and cream

Lactose-free products are made by splitting lactose into glucose and galactose. The fat and protein are unchanged, but two small sugars freeze differently from one big one. Swap both the milk and the cream in the vanilla recipe for lactose-free versions and the fat stays at 14.0 %, while PAC rises from 23.1 to 26.0 — at the same temperature the ice cream is noticeably softer and sweeter.

That is not a fault, just something to plan for: cut some of the sugar, or store the ice cream colder. There is more in Lactose-free and vegan ice cream, and a ready recipe in lactose-free cream ice cream.

Plant-based alternatives

Coconut can replace cream as a source of fat — our vegan coconut vanilla ice cream reaches 15.1 % fat, more than many dairy recipes. What no plant ingredient replaces is MSNF: that whole column is zero. Vegan recipes therefore need their solids from somewhere else — nut paste, starch, syrup or a stabiliser. Oat and almond drinks are thin as well, so on their own they give ice cream no body.

Quick answers

• The recipe says “whipping cream” → anything from 30 to 36 % fat. Read the number on the tub and choose the matching ingredient in the recipe.
• You only have 12 % cooking cream → use more of it and less milk, or add milk powder, and expect a lighter, milkier ice cream.
• You have no cream at all → make gelato or frozen yogurt, which are built for lower fat, rather than cream ice cream.
• You want fewer calories → cut the cream, not the sugar. Sugar keeps ice cream soft; fat only adds energy.
• You want more body without fat → skimmed milk powder, but stay below roughly 16 % MSNF in the mix.

For what fat and milk solids actually do, see What fat, sugar, protein and air do in ice cream.