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MORTAR & KETTLE
Apothecary of Flavor
SMOOTHIE · №032

Green Protein Smoothie

60 g of protein, no added sugar; kale, seeds, and whey, blended whole

A smoothie engineered for the numbers and still built to taste good: around 60 grams of protein, a wall of fibre, no added sugar, and a near-complete sweep of micronutrients, all for roughly 850 unapologetic calories. Kale carries the vitamins and its cruciferous defence compounds; banana and mango do all the sweetening so nothing else has to; whey and collagen stack the protein and the amino acids that rebuild you; and pumpkin, chia, and flax bring the omega-3s, minerals, and fibre. The one trick that makes it drinkable: grind the seeds dry first so they actually break down, then blend the kale into the milk until it vanishes, and only then everything else. The result is a green glass that drinks like dessert and reads like a supplement label.

Easy5 minForgiving
SweetFruityEarthyEnergizingImmuneAnti-inflammatory
Green Protein Smoothie · finished

Method

Check off each step as you go. Your progress is saved. Amounts below already match your batch size.

Grind: Blend the pumpkin seeds, chia, and flaxseed dry, on their own, until they break down to a coarse meal. Grinding them first is what lets their oils and fibre actually release into the drink.
20 gpumpkin seeds10 gchia seeds10 gground flaxseed
Greens: Add the milk and the kale and blend until completely smooth, with no green flecks left; the kale should disappear into the base.
250 mlfresh milk60 gkale
Finish: Add the banana, mango, whey, collagen, and the peanut butter if using, and blend again until thick and glossy. Add a handful of ice for a colder, thicker pour.
120 gbanana80 gmango30 gwhey protein15 gcollagen peptides15 gpeanut butter
Serve: Pour and drink straight away, before the chia has time to thicken it further.
Grind the seeds, blend it whole, and the macros take care of themselves.
THE MORTAR & KETTLE METHOD

The chemistry

SKELETAL STRUCTURES

6 compounds carry this recipe. Here is what each one does and, where we have it, what it actually looks like.

C₇H₁₄O₂
isoamyl acetate
C₇H₁₄O₂

The ester behind ripe banana's smell and taste. It does the aromatic sweetening here, so the smoothie reads as dessert without any sugar added.

SweetFruity
C₂H₅NO₂
glycine
C₂H₅NO₂

Collagen is roughly a third glycine, the smallest amino acid and a genuinely sweet-tasting one (its name is from the Greek for sweet). It rounds the drink while feeding skin, joints, and connective tissue.

Sweet
C₄₀H₅₆
β-carotene
C₄₀H₅₆

The orange-gold carotenoid of mango and kale, and the body's raw material for vitamin A; it lies behind the drink's colour and forms part of its immune and eye-health story.

Immune
C₆H₁₁NOS₂
sulforaphane
C₆H₁₁NOS₂

The isothiocyanate released from kale and its cousins, the much-studied compound that switches on the body's own antioxidant and detoxification pathways.

Immune
C₆H₁₃NO₂
L-leucine
C₆H₁₃NO₂

The branched-chain amino acid whey is richest in, and the one that flips on muscle protein synthesis. It's the reason this leans on whey and not just any protein.

Energizing
C₁₈H₃₀O₂
α-linolenic acid
C₁₈H₃₀O₂

The omega-3 fatty acid packed into chia and ground flax, the anti-inflammatory fat that grinding the seeds first is what actually unlocks.

Anti-inflammatory

Nutrition

ESTIMATED · WHOLE RECIPE

A rough estimate for everything this recipe makes: the whole batch, not one serving. It moves with the batch size you set above.

Nutrition Facts
Whole recipemakes 1 batch
Amounts are for the entire recipe, not one serving.
Calories811
% Daily Value*
Total Fat 35g45%
Saturated Fat 9.5g47%
Trans Fat 0g
Cholesterol 29mg10%
Sodium 363mg16%
Total Carbohydrate 72g26%
Dietary Fiber 15g53%
Total Sugars 42g
Protein 64g129%
Vitamin A 465mcg52%
Vitamin C 112mg125%
Calcium 642mg49%
Iron 5mg28%
Potassium 1728mg37%
* Percent Daily Values are based on a 2,000 calorie diet.

An estimate, summed from USDA reference values (10 of 10 ingredients counted). Oil for frying and water for boiling are left out; everything else is counted as listed. Real numbers shift with brand, ripeness, and how it's cooked. Treat it as a ballpark, not dietary or medical advice.

On the table together

THE INDEX, LINKED

This recipe is part of a set: follow the thread through the blends it uses and what it's served with.

FROM THE JOURNAL

The reading behind this recipe

Big Mike, Blue Java, Matooke: a Map of Every Banana Worth Knowing
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Big Mike, Blue Java, Matooke: a Map of Every Banana Worth Knowing

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13 September 2026·9 min read·71 SOURCES
The mustard order has a tropical fruit in it
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28 August 2026·9 min read·9 SOURCES