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Cold Beverages

How to adjust the thickness of a milkshake?

Quick answer

To thicken a milkshake, add more ice cream, chill it, or add a spoonful of malted milk powder. To thin it, blend in milk a tablespoon at a time. A Tasting Table recipe starts at about 4 parts ice cream to 1 part milk.

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In this article
  1. How do you make a milkshake thicker?
  2. How do you thin a milkshake that is too thick?
  3. Why is my milkshake runny?
  4. Quick guide

How do you make a milkshake thicker?

The ice cream-to-milk ratio sets the thickness. The article’s old-fashioned vanilla recipe uses 4 parts ice cream to 1 part milk. If your shake is runny, try these in order:

  1. Add more ice cream a scoop at a time and pulse briefly.
  2. Chill it. A chef quoted by Tasting Table says to get it very cold so it starts to freeze and thicken. Freeze the mixture in 20-minute stretches, stirring between each, until thick. Freezing too long makes it icy.
  3. Add malted milk powder. A spoonful thickens it and adds a classic flavor.
  4. Use higher-fat milk such as whole milk for a creamier texture.
  5. Xanthan gum thickens and binds without changing flavor, per the same article.

How do you thin a milkshake that is too thick?

The source has no specific advice for this, so this is common-sense guidance: add milk one tablespoon at a time and blend briefly, since a big pour can overshoot and leave a runny shake.

Why is my milkshake runny?

  • Too much milk for the amount of ice cream.
  • Ice cream that is soft or partly melted. Use ice cream straight from the freezer.
  • Over-blending, which can warm the mixture. Stop once smooth.
  • Warm ingredients or a warm blender jar. Chill the glass and jar if you can.
  • Add-ins with a lot of liquid, such as syrup.

Quick guide

Problem Fix
Too thin More ice cream, chill, malt powder, richer milk
Too thick Milk, 1 tablespoon at a time
Icy Let it sit a few minutes, stir
Melts too fast Chill glass, serve right away

Cold ingredients thin out as they warm, so drink the shake soon after making it.

People also ask

What is the ratio of ice cream to milk in a milkshake?

One chef's classic is 4 parts ice cream to 1 part milk. Use less milk for thicker.

Can I thicken a milkshake without more ice cream?

Yes: chill it in the freezer in short stretches, add malted milk powder or xanthan gum, or use higher-fat milk.

How do I thin out a thick milkshake?

Blend in milk a tablespoon at a time until it flows the way you like.

General information only, not medical advice. If you have a health condition or are pregnant, ask your doctor before changing what you drink.

Sources

  1. Tasting Table: The Best Way To Fix A Runny Milkshake Without Adding More Ice Cream, read 5 Nov 2026
Written by Drinks Type Editorial Team · Published Apr 15, 2025 · Updated Nov 5, 2026
About · How we verify this · Editorial policy · Corrections

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