Classic Diner Malted Milkshake
A thick, creamy vanilla milkshake with the toasty, nutty depth of malted milk powder, finished with a cloud of whipped cream. Ready in five minutes with a blender.
- Prep
- 5 min
- Cook
- —
- Wait
- 10 min
- Total
- 15 min
- Makes
- 2 shakes (about 14 oz / 410 ml each)
Steps
Before you start
- Put two tall glasses in the freezer 10 minutes before blending so the shakes stay cold and thick.
- Let the ice cream sit on the counter for 3–5 minutes so it is scoopable but still firm; melted ice cream makes a thin shake.
- Use cold milk straight from the fridge.
- Use plain malted milk powder (such as Carnation or Horlick's), not chocolate malt drink mix, unless you want a chocolate version.
Chill the glasses
- Place two tall 16-oz (475 ml) glasses in the freezer.
- Leave them for at least 10 minutes while you gather everything else.
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Ready when: Glasses are frosty and cold to the touch
Soften the ice cream
- Leave the ice cream on the counter for 3–5 minutes.
- Scoop it into 6 large scoops (about ½ cup / 70 g each) and set aside.
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Ready when: A scoop pulls away easily but holds its shape
Tip: Don't let it go soupy or the shake will be thin.
Load the blender
- Pour the cold milk into the blender first.
- Add the malted milk powder, vanilla extract and the pinch of salt if using.
- Top with the ice cream scoops.
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Tip: Liquid goes in first so the blades catch easily and don't stall on the ice cream.
Blend until thick
- Start on low speed for 5 seconds to break up the ice cream, then increase to medium-high and blend 15–20 seconds.
- Stop and scrape down the sides if any ice cream is stuck.
- Blend 5 more seconds if needed.
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Ready when: Smooth, pale tan and thick enough to slowly fall off a spoon, with no streaks of powder or large ice cream chunks
Tip: Don't over-blend; heat from the motor melts the ice cream and thins the shake.
Pour into glasses
- Take the chilled glasses from the freezer.
- Divide the shake evenly between them, pouring about 1½ cups (350 ml) into each and leaving about 1 inch (2.5 cm) of room at the top.
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Ready when: Both glasses are filled evenly with room left for topping
Top and serve
- Pipe or spoon the whipped cream over each shake in a generous swirl.
- Dust with the malted milk powder if using, and set a cherry on top.
- Serve right away with wide straws and long spoons.
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Ready when: Whipped cream holds a peak on top of the shake
Tip: Serve immediately; the shake loses thickness within 10 minutes.
Good to know
Tips
- For an extra-thick shake, reduce the milk to ½ cup (120 ml); for a thinner one, add milk 1 tablespoon at a time.
- Add more malt a tablespoon at a time to taste; diner-style malts are often quite strongly malted.
- Use full-fat, good-quality vanilla ice cream; low-fat versions melt quickly and taste icy.
- Rinse the blender right after use so the malt powder doesn't dry sticky on the jar.
Storage & reheating
Best served immediately. Leftover shake can be poured into a lidded freezer-safe container and frozen for up to 1 week. To serve, let it sit at room temperature for 10 minutes, then re-blend with a splash (1–2 tablespoons) of milk. Do not refrigerate; it separates and thins. Keep unused malted milk powder in a sealed container in a cool, dry pantry.
Substitutions
- whole milk → 2% milk or unsweetened oat milk. Shake will be slightly less rich; oat milk works well dairy-light.
- plain malted milk powder → chocolate malted milk powder. Makes a chocolate malt; use the same amount.
- vanilla ice cream → chocolate or coffee ice cream. Use the same weight for a different flavor.
- whipped cream → coconut whipped topping. Use if you want a dairy-free topping, with dairy-free ice cream and milk too.
