Colour Mill
Fat-Soluble Colorant - Colour Mill Rust
Fat-soluble colorant shade Rust, available in 20 ml and 100 ml
Colour Mill Rust evokes the rust of old iron, the terracotta of Italian amphorae. This fat-soluble food coloring is designed for fatty pastry bases: melted white chocolate, butter ganache, buttercream, royal icing, and fondant worked with the warmth of hands. Especially sought after by cake designers for earthy and bohemian autumn wedding cakes and terra cotta or pottery themed layer cakes, it offers a distinctive shade recognizable from the Colour Mill palette (Australia).
Made in Australia using a proprietary pigment encapsulation technology, Colour Mill withstands baking up to 180°C without fading or lightening. The Rust shade remains stable after baking, making it the go-to option for colored cake batters before going into the oven. The 20 ml flexible dropper bottle allows precise dosing for occasional use; the 100 ml size is intended for boutique bakeries with regular production (per milliliter, the 100 ml is about 35% cheaper).
Shade Rust
Official reference of the Colour Mill palette (Australia).
Rust: 3 shades depending on dosage
The shade subtly adjusts according to dosage without losing its identity.
Light dosage
2 to 3 drops / 250 g
Standard dosage
5 to 8 drops / 250 g
Intense dosage
15 to 25 drops / 250 g
Available sizes
2 packaging options to choose from depending on your usage frequency, select yours via the dropdown menu above:
20ml
6.19 €
100ml
19.99 €
Creative ideas with Rust
5 signature uses where this shade makes a difference:
- • Earthy and bohemian autumn wedding cakes
- • Terra cotta or pottery themed layer cakes
- • Rustic autumn-themed royal icing cookies
- • Vintage and industrial chic drip cakes
- • Outdoor autumn wedding event cupcakes
Features
- • Brand: Colour Mill (Australia)
- • Type: Concentrated fat-soluble food coloring
- • Shade: Rust
- • Packaging: Flexible dropper bottles 20 ml and 100 ml
- • Compatible bases: Melted white chocolate, ganache, buttercream, royal icing, fondant
- • Typical dosage: 2 to 6 drops for 250 g of preparation
- • Heat resistance: Stable up to 180°C, does not lighten after baking
- • Origin: Australia (proprietary manufacturing)
Directions for use
- Base preparation: temper the fat base (white chocolate, ganache, buttercream) to 25-30°C. Above 35°C, some pigments may lose intensity.
- Initial dosage: shake the bottle for 10 seconds. Add 2 to 4 drops per 250 g of preparation for pastel shades, 6 to 10 drops for bright shades, 15 to 25 drops for dark shades.
- Mixing: whip with a stand mixer or silicone spatula for 30 to 60 seconds to evenly distribute the color.
- Rest and stabilization: let rest for 30 minutes at room temperature under cling film in contact. The shade develops and fully reveals itself during rest.
- Possible adjustment: if the shade is too pale, add 1 to 3 additional drops and remix. Proceed in increments to avoid oversaturation.
Ingredients and compliance
Ingredients: food-grade vegetable oil base and food color pigments compliant with European regulations (EU 1333/2008).
Allergens: no major allergens declared. Gluten-free, lactose-free, egg-free, peanut-free, soy-free. Suitable for vegetarian and vegan diets.
Storage
- • Keep the bottle closed in a cool, dry place, away from direct light.
- • Ideal storage temperature: between 15 and 22°C.
- • A slight pigment/oil separation is normal after prolonged storage: shake for 10 seconds before use.
- • Once opened, use within 12 months to preserve maximum pigment intensity.
Patissland Tip - Rust
Rust is the signature color of terra cotta wedding cakes that have dominated Pinterest since 2023. Combine with Sand, Sage, and Latte for the complete desert/boho palette. Highly sought after for rustic weddings in the South of France, Italy, or Morocco. Not suitable for winter, reserved for the August-November seasons.
Frequently Asked Questions
What is the difference between 20 ml and 100 ml?
The 20 ml size is intended for occasional use (30 to 50 colored preparations in total). The 100 ml is designed for regular bakery production (more than 5 colored orders per week). At equal volume, the 100 ml is about 35% cheaper per milliliter.
How many drops for 250 g of buttercream?
For pastel shades: 2 to 4 drops. For bright shades: 5 to 10 drops. For dark shades: 12 to 20 drops. Always start with less and adjust gradually; it's easier to intensify than to lighten.
Does Colour Mill dye withstand baking?
Yes, Colour Mill is one of the few liposoluble dyes that retains its intensity after baking up to 180°C. This property sets it apart from classic liquid dyes that lighten in the oven.
Can Colour Mill be used on water-based bases (royal icing, syrup)?
No, Colour Mill liposoluble is designed for fat-based bases: melted chocolate, ganache, buttercream, fondant. For water-based bases, use the Colour Mill water-soluble range.
Does the bottle have a built-in dropper?
Yes, the Colour Mill 20 ml and 100 ml bottles have a built-in dropper opening in the soft cap. A simple press on the bottle delivers a precise drop.
To go further
Complete your Colour Mill palette:
- • To expand your palette, complete it with Liposoluble Colorant - Colour Mill Black - an ideal complementary shade for gradients.
- • For your multicolored preparations, also add Liposoluble Colorant - Colour Mill Burgundy to your supplies.
- • And to intensify your bright shades without changing the color, discover Colour Activator - Colour Mill Booster (Colour Mill activator).
Shipping and Delivery
Processing and Delivery Times
- Order Preparation: 0 to 2 working days
- France, Belgium, Germany: 1 to 2 working days
- Europe: 2 to 5 working days
- Click & Collect Osny: 24-48h
Shipping Fees
- FR, BE, DE: based on weight
- Europe: based on country and weight
- Click & Collect Osny: Free
Exact fees are calculated at checkout.
