Sweetened Condensed vs Evaporated Milk

Both cans sit side by side on the shelf, both are milk with much of the water cooked off, and both have similar labels. That is where the similarity ends. Evaporated milk is unsweetened and about as thick as light cream. Sweetened condensed milk is loaded with sugar and pours like warm honey. Use one where the other belongs, and a pumpkin pie turns cloyingly sweet or a key lime pie never sets.

This guide explains how each is made, what jobs they do in baking and desserts, why they are not interchangeable, and how to make a reasonable homemade version of each when the pantry comes up short. It also covers dulce de leche and a few storage habits for opened cans.

How each one is made

Evaporated milk is made by gently heating milk under reduced pressure to remove more than half of its water, then sealing it in cans and sterilizing it with heat. That heating gives it a slightly cooked, caramelized flavor and a light tan color. It is often sold in whole, low-fat and fat-free versions.

Sweetened condensed milk is concentrated milk with sugar added. The sugar does the preserving, so it does not need the same high-heat treatment. The result is very thick, glossy and sweet. A typical 14-ounce can contains well over a third of its weight in added sugar.

What each does in baking

Evaporated milk adds creaminess without the fat of cream. It is a classic in pumpkin pie, sweet potato pie, custards, creamy soups, fudge and tres leches cake, where it joins condensed milk and cream in the soaking mix. Its proteins also help custards set smoothly.

Sweetened condensed milk is both sweetener and structure. In key lime pie, the acid in the lime juice thickens the milk proteins so the filling sets with little or no baking. It binds magic cookie bars, sweetens coconut macaroons and makes no-churn ice cream smooth, because the sugar lowers the freezing point and the thickness limits ice crystals.

• Evaporated milk: pumpkin pie, sweet potato pie, custards, savory sauces
• Sweetened condensed milk: key lime pie, magic bars, macaroons, dulce de leche, fudge
• Both: tres leches cake, some caramel and flan recipes

Why you cannot swap them

Swapping condensed milk for evaporated milk adds a huge amount of sugar and makes the result dense and sticky. A pumpkin pie made that way is too sweet and may not set properly. Going the other way, evaporated milk lacks the sugar and body that a condensed milk recipe depends on; a key lime pie made with it stays runny, and magic bars fall apart.

Recipes sometimes say condensed milk when they mean sweetened condensed milk, since unsweetened condensed milk is not common in U.S. stores. If you are unsure, check the amount: a recipe that uses a 14-ounce can is almost certainly asking for the sweetened version.

Homemade sweetened condensed milk

Combine 600 ml (2½ cups) whole milk and 170 g (¾ cup plus 2 tablespoons) granulated sugar in a wide, heavy saucepan. Stir over medium heat until the sugar dissolves, then lower the heat and simmer gently, stirring every few minutes and scraping the bottom, until the milk reduces to about 300 ml (1¼ cups). This takes roughly 45 to 60 minutes.

The mixture should coat a spoon thickly and turn a pale ivory. It thickens further as it cools. This makes about the same amount as one 14-ounce can. Refrigerate it and use within about a week. For a richer version, replace a quarter of the milk with cream.

Homemade evaporated milk

Simmer 750 ml (about 3 cups) whole milk in a wide pan over low to medium heat, stirring often, until it reduces to about 350 ml (1½ cups), roughly the volume of a 12-ounce can. This takes 30 to 45 minutes. Skim off any skin that forms, or stir it back in.

The flavor will be fresher and less caramelized than canned, which most people do not notice in pies or custards. Cool it before using in recipes with eggs, and keep it refrigerated.

Dulce de leche and storage

Sweetened condensed milk slowly cooked turns into dulce de leche, a thick, caramel-colored spread. Do not boil or bake an unopened can: pressure can build inside and cause it to burst. Instead, pour the milk into a heavy pan and stir over low heat, bake it in a covered dish set in a water bath, or cook it in a heatproof jar following a tested method.

Once opened, transfer leftover evaporated or condensed milk to a clean, covered container and refrigerate it. Evaporated milk keeps for about 3 to 5 days; sweetened condensed milk lasts about a week or a little longer thanks to its sugar. Discard either one if it smells sour or shows mold.

Common questions

Can I use evaporated milk in place of regular milk?

Yes. Mix equal parts evaporated milk and water to get something close to regular milk. Use it in baking, sauces or coffee. The flavor is slightly cooked, which most people do not notice in cakes and quick breads.

Is there a dairy-free sweetened condensed milk?

Yes. Coconut sweetened condensed milk is sold in cans and works well in macaroons, bars and many no-bake desserts. It adds coconut flavor, and it sets less firmly with acid than dairy versions.

Why is my canned evaporated milk thick or lumpy?

Old cans can thicken or separate over time. Shake the can well and pour the milk through a sieve. If it smells off, tastes sour or the can is bulging, dented at the seam or leaking, throw it away.