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Also known as: food coloring blue, blue food dye
Per 100g
Nutrition data source: USDA FoodData Central
Common measurement equivalents in grams
Blue food coloring is primarily used for aesthetic purposes and provides no significant nutritional value. While synthetic dyes like FD&C Blue No. 1 are FDA-approved, natural alternatives like spirulina or butterfly pea flower extract may offer minor antioxidant benefits.
Per 100g, blue food coloring contains approximately 50 calories and 12g of carbohydrates, with zero protein or fat. Since most recipes only require a few drops, the nutritional impact per serving is negligible.
Most synthetic blue food colorings are vegan as they are derived from chemical synthesis rather than animal products. Natural blue dyes from plant sources like spirulina are also vegan, but always check the label for additives like glycerin which could occasionally be animal-derived.
Generally, blue food coloring is gluten-free as it is made from synthetic dyes or plant extracts. However, some brands may use carriers or processing aids that contain gluten, so it is best to look for a certified gluten-free label if you have a severe sensitivity.
High-quality gel or liquid blue food coloring is usually tasteless in small amounts. However, using excessive amounts of liquid dye can sometimes introduce a slightly bitter or metallic aftertaste, especially with certain synthetic formulas.
Liquid coloring is water-based and best for light tints, but can thin out batters. Gel coloring is more concentrated, providing vibrant blue hues without changing the consistency of frostings or doughs, making it the preferred choice for professional baking.
blue food coloring is a versatile ingredient found in cuisines around the world. With 50 calories per 100g and valuable grams of protein, it's a nutritious addition to many dishes.
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Yes, you can create natural blue dye by boiling red cabbage and adding a pinch of baking soda to the purple liquid to shift the pH to blue. Alternatively, powders made from butterfly pea flowers or spirulina can be used for a natural, vibrant blue.
Blue food coloring should be stored in a cool, dry, and dark place, such as a pantry or cupboard. Exposure to direct sunlight can cause the pigment to fade over time, especially in natural varieties which are more light-sensitive.
Most synthetic food colorings have a long shelf life of 2 to 4 years; they don't usually spoil in a way that makes them unsafe, but they may lose potency or dry out. Natural blue colorings usually have a shorter shelf life and should be used within a year for best results.
Synthetic blue dyes are FDA-approved for consumption, but some parents choose to avoid them due to concerns regarding hyperactivity in sensitive children. For a more natural alternative, look for dyes derived from plants like spirulina or red cabbage.