How to Make Blue Frosting (Two Ways)
Color a tub of white frosting blue two ways: Punchy gel coloring or natural blue spirulina, both in under five minutes.
Ingredients
Method 1: Gel Food Coloring
- 1 tub (16 oz) white frosting Great Value Vanilla or Pillsbury Classic White
- 2-8 drops blue gel food coloring royal or sky blue
Method 2: Blue Spirulina
- 1 tub (16 oz) white frosting Great Value Vanilla or Pillsbury Classic White
- 1/4 - 1 t food-grade blue spirulina powder start with 1/4 t and adjust
Instructions
Method 1: Gel Food Coloring
- Empty frosting into a medium bowl. Stir for a few seconds with a spatula to loosen.
- Add gel coloring one drop at a time. Start with two drops, add more for deeper shades (up to eight or more for navy).
- Fold the gel into the frosting with a spatula until the color is fully uniform with no streaks.
- If the frosting tightens, rest five minutes on the counter and stir once more before use.
Method 2: Blue Spirulina Powder
- Empty frosting into a separate medium bowl. Stir to loosen.
- Add 1/4 t blue spirulina powder. Whisk in with a small whisk or fork to break up clumps.
- Switch to a spatula and finish mixing until the shade is even.
- Adjust 1/8 t at a time for deeper teal, stopping at 3/4 t to avoid any vegetal note.
Notes
Note that blue spirulina has the slightest bit of nutrition and antioxidants that gel food coloring doesn't have, but in these measurements, it is in micro-amounts.
Both methods work on any white or vanilla frosting. Gel gives saturated synthetic blues, spirulina gives soft natural blues. Combine them for muted intermediate shades. Store leftover tinted frosting at room temperature for two days or refrigerated for one week in an airtight container.
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