Mastering Mirror Glaze
The secret isn't in the ingredients, but in the patience to wait for the bubbles to subside and the viscosity to peak. If you rush the temperature or the thaw, the glaze will either slide off the sides or weep condensation.
Freeze your canvas until it is stone cold.
The cake must be frozen solid, or the heat of the glaze will melt the surface, causing the finish to turn dull and streaky.
- Digital immersion blender
- High-precision kitchen thermometer
- Fine-mesh sieve
- Large pitcher
- Offset spatula
What goes in.
- 20ggelatin powder
- 120mlcold water
- 300ggranulated sugar
- 300gglucose syrup
- 150mlwater
- 200gsweetened condensed milk
- 300gwhite chocolate, finely chopped
- as neededgel food coloring
Eliminate air at the source
Keep the head of the immersion blender submerged at the bottom of the pitcher at all times to prevent incorporating air bubbles, which are nearly impossible to remove once the glaze sets.
The method.
Bloom the gelatin
Mix the 20g of gelatin with 120ml cold water and let it sit for 10 minutes until it turns into a firm rubbery mass.
Cook the base
Heat the sugar, glucose, and 150ml of water in a saucepan to 215°F. Remove from heat and stir in the bloomed gelatin.
Emulsify
Pour the hot mixture over the white chocolate and condensed milk in a tall pitcher. Let it sit for one minute, then blend slowly until smooth.
Strain and cool
Pass the mixture through a fine-mesh sieve into a clean container to catch any undissolved chocolate. Cover the surface directly with plastic wrap and chill until it reaches exactly 90°F.
The pour
Place your frozen cake on a rack over a tray. Pour the glaze in one steady motion starting from the center and moving outward. Use an offset spatula only once to level if absolutely necessary.
Other turns to take.
Dark Chocolate Mirror
Replace white chocolate with 60% cocoa solids chocolate. The darker base requires slightly less gelatin to maintain the same viscosity.
Fruit-Infused
Substitute 50g of the water with strained fruit puree for a transparent, tinted glaze.
When it doesn't go to plan.
Always use a tall, narrow pitcher for blending to minimize the surface area exposed to air.
If you see bubbles on the surface of the poured glaze, touch them lightly with the tip of a clean toothpick to pop them before the glaze sets.
Let the excess glaze drip for at least 15 minutes before moving the cake to a serving platter.
The ones that keep coming up.
Why did my glaze slide off the cake?
The cake was likely not frozen long enough, or the glaze was too warm when poured. It must be cold to the touch.
Can I reuse leftover glaze?
Yes. Strain it into a container, cover it airtight, and refrigerate. Reheat gently to 90°F when ready to use again.
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