Out of Half-and-half, one case

Can you substitute sour cream for half-and-half?

4 options, ranked, with the exact amount

Use thisBest of 4 options

Use Sour cream + milk

½ cup sour cream + ½ cup milk for every 1 cup of half-and-half

Only in some recipes, and only thinned. Sour cream is thick, tangy and curdles when it boils, so it is not a straight swap for a pourable cream. For baking, mashed potatoes and sauces finished off the heat, whisk ½ cup sour cream with ½ cup milk for each cup of half-and-half. It does not work in coffee, in custards meant to taste sweet and neutral, or in a soup that will be boiled.

Verdict —: You'll taste it
The tweak —: Whisk the sour cream smooth, then whisk in the milk a little at a time. Use this as a starting point and add a splash more milk if it is thicker than cream.
Best for —: muffins, quick breads, pancakes and cakes
Pantry —: Likely in your cupboard

One casethe full half and half card

Every option, one card

Ranked

Half-and-half substitutes compared
#	Substitute	Instead of 1 cup half-and-half	Verdict
1	Sour cream + milkmuffins, quick breads, pancakes and cakes	½ cup sour cream + ½ cup milkYou'll taste it	You'll taste it
2	Whole milk + butterbaking where tang is unwelcome	7/8 cup whole milk + 1 tbsp melted butterTweak it	Tweak it
3	Evaporated milksoups and chowders that simmer	1 cupTweak it	Tweak it
4	Whole milkcoffee	1 cupYou'll taste it	You'll taste it
Not a swap	Sour cream in coffee or a boiling soup	not a swapNot for this	Not for this

What changesWhat changes, option by option4 options

Sour cream + milk

tangy, like buttermilk with more body

Full-fat sour cream is about 18% fat, so thinning it with an equal amount of milk lands near the richness of half-and-half and makes it pourable. The tang stays.

Best for: muffins, quick breads, pancakes and cakes, mashed potatoes, pan sauces and stroganoff, stirred in off the heat, creamy casseroles
Prep: Whisk the sour cream smooth, then whisk in the milk a little at a time. Use this as a starting point and add a splash more milk if it is thicker than cream.
Contains: dairy
Where it fails: Any liquid that will simmer or boil after it goes in: it curdles into grainy flecks. Hot coffee does the same.

Use full-fat sour cream. Light and fat-free versions contain thickeners and split more easily when heated.

Whole milk + butter

close to half-and-half, slightly buttery

The neutral-tasting option from the same fridge. Milk with a tablespoon of butter matches the fat of half-and-half without any sourness.

Best for: baking where tang is unwelcome, cooked sauces and soups, quiche and custards
Prep: Melt the butter, cool it slightly and whisk it into the milk just before using.
Contains: dairy
Where it fails: Cold uses, where the butter firms up and separates.

Evaporated milk

slightly cooked and caramel-like

Canned milk with the body of half-and-half and good heat stability. Use it undiluted where sour cream would curdle.

Best for: soups and chowders that simmer, coffee, mac and cheese and cream sauces
Prep: Use straight from the can. Do not add water.
Contains: dairy
Where it fails: Dishes where a fresh cream taste matters, such as panna cotta.

Whole milk

lighter and less creamy

Plain milk has about a third of the fat of half-and-half. It measures the same and gives a thinner, less rich result.

Best for: coffee, baking, thin soups
Contains: dairy
Where it fails: Cream sauces and custards, which come out thinner and set softer.

Sour cream in coffee or a boiling soup

Sour cream is already acidic, and acid plus high heat makes milk protein clump.

It also will not dissolve into a hot drink.

Best for: nothing in these two cases
Where it fails: Coffee turns sour with white flecks floating in it. A soup brought back to a boil after the sour cream goes in breaks into grainy curds that cannot be whisked smooth.

Tips for substituting half-and-half

5 tips

For 1 cup of half-and-half in baking, whisk ½ cup full-fat sour cream with ½ cup milk. For ½ cup, use ¼ cup of each.
In soup or sauce, take the pot off the heat, stir a ladle of the hot liquid into the thinned sour cream first, then stir that back into the pot. Do not let it boil again.
Sour cream is acidic and makes batters more tender. Mix just until combined so muffins and cakes do not turn gummy.
Leave it out of anything set with eggs where the flavor should be plain and sweet, such as creme brulee or vanilla custard. The tang comes through.
In mashed potatoes, the swap is welcome: use the thinned mix warm, and salt at the end.

Questions

5 questions

Can I use sour cream in place of half-and-half in soup?

Yes, if you add it at the very end. Thin ½ cup sour cream with ½ cup milk per cup of half-and-half, take the soup off the heat, temper the mix with a ladle of hot soup and stir it in. If the soup boils afterward, the sour cream curdles.

Can I use sour cream in place of half-and-half in pasta sauce?

For a sauce finished off the heat, yes. Stir the thinned sour cream in after the pan comes off the burner and toss with the pasta. It gives a tangy sauce, closer to stroganoff than to Alfredo. A sauce that has to reduce at a simmer needs evaporated milk or milk and butter.

Can I put sour cream in coffee?

No. It does not dissolve, it curdles in the heat and it tastes sour. Use whole milk or evaporated milk in coffee.

Can I substitute sour cream for half-and-half in quiche or scrambled eggs?

It works with a change in flavor. Thin the sour cream with an equal amount of milk and whisk it into the eggs until smooth. The quiche sets normally and tastes tangy. For a neutral custard, use 7/8 cup milk plus 1 tablespoon melted butter per cup.

Does Greek yogurt work the same way?

Mostly. Thin plain whole-milk Greek yogurt with an equal amount of milk and use it in baking and in sauces finished off the heat. It is lower in fat than sour cream, so it curdles even more readily when heated.