Magic Spoon

Lemon Cake

MealFan pickBest high protein low sugar cereal swap
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protein
13g
Best for
Clean label
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Independent reviewBased on the product label. No sponsored placement.
Market position

How it compares

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The catch

The 0g sugar comes from roughly 7g of allulose per bowl, which most people tolerate well but larger servings can cause gas or loose stools in sensitive stomachs. (source)

The honest take

First, a heads up: Magic Spoon Lemon Cake is a high protein breakfast cereal, not a drink. A 38g bowl gives you 13g of protein from casein and whey with 0g of sugar and about 4g of net carbs, which is why keto and high protein eaters reach for it over regular cereal. The 0g sugar comes from a sweetener blend of allulose and monk fruit, and the crunch is built from milk protein, tapioca starch, and a high oleic sunflower and avocado oil blend rather than grains. It is genuinely low sugar and protein dense, but it is also an ultra processed food (NOVA group 4) that costs far more per bowl than a bag of oats.
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The Magic Spoon product guide

15 products reviewed

Nutrition per serving

1 cup (38g)

140Calories
13gProtein
15gCarbs
7gFat
1gFiber
0gSugar
160mgSodium
Gluten freeGrain freeKeto friendlyNo added sugarHigh protein

Who it's for

✓ Buy it if

High protein or keto eaters who want a sweet, low sugar cereal that holds them over like a protein shake.

✕ Skip it if

You want a whole grain, fiber rich, minimally processed breakfast or you are dairy free, since the base is milk protein.

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Research desk

Compare other drinks side by side

Real other drinks from our directory, on the numbers that matter. The green check marks the best in each column. Tap a heading to rank them, tick the boxes to put 2 to 4 head to head, or click any product to open its full review.

Product MealFan Score ↕Protein ↕Calories ↕Sugar ↕Sodium ↕
Magic SpoonLemon Cake this product8.2/1013g1400g160mg
Magic SpoonPeanut Butter 8.1/1014g1700g210mg
Bolthouse FarmsGreen goodness 3.9/102g13026g30mg
NakedProtein Double Berry 5.4/1020g31042g220mg
Nokasuperfood smoothie strawberry pineapple + prebiotic fiber 6.7/105g12013g0mg
NakedStrawberry Banana Machine 9/109g1120n/a135mg
Splash Blast: Wild Berry 6.4/100g00g26mg
San PellegrinoCiao Peach 6.2/100g01g35mg
SanpellegrinoAranciata Orange 3.3/100g12027g0mg
Bubly Sparkling WaterBubly 6.4/100g00g0mg
BublyBurst Watermelon Lime 6.4/100g50g10mg
S. Pellegrino EssenzaTangerine & Wild Strawberry 6.4/100g0n/a10mg
Kirkland SignatureSparkling Flavored Water kiwi strawberry 6.4/100g50g0mg
Tick 1 to 3 boxes above to put them side by side
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Where to buy

Typically about 9 to 10 dollars a box, roughly 2 dollars a serving. Prices move with promos and store, so check before you buy. Some links are affiliate links and never change our verdict.

How we review: scored on the verified label and named sources, never brand marketing. We flag the real tradeoff on every product. Some links are affiliate links; it never changes a verdict. No brand pays to appear here.