How to Make an Edible Fake Dish Sponge
Craft an ultra-realistic edible kitchen sponge using aerated microwave sponge cake, textured biscuit scouring top, and delicate milk foam soap suds.
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🧰 Required Tools & Equipment
- ✓ Microwave-safe paper cup
- ✓ Handheld milk frother
- ✓ Serrated paring knife
- ✓ Small mixing bowl
- ✓ Whisk
- ✓ Toothpick or skewer
📦 Materials & Supplies
- ✓ 1 large egg
- ✓ 25g granulated sugar
- ✓ 15g all-purpose flour
- ✓ Yellow and green liquid food coloring
- ✓ 3 plain vanilla cookies or graham crackers
- ✓ 50ml whole milk (cold)
- ✓ 1 tbsp honey or simple syrup
⚠️ Safety Checkpoints & Warnings
- • Allow the microwaved cake cup to cool before handling; steam release can cause minor burns.
- • Use gentle sawing motions with the paring knife away from your fingers when squaring sponge edges.
📋 Step-by-Step Guide (5 Steps)
Mix the Yellow Aerated Batter
In a small bowl, whisk the egg and sugar vigorously until frothy and pale yellow. Gently fold in the flour and 2-3 drops of yellow food coloring until uniform and smooth. Pour the bright yellow batter into a microwave-safe paper cup until half full.
- • Batter is smooth, runny, and bright canary yellow with micro-bubbles.
- • Paper cup is filled precisely halfway.
- • Overfilling the cup causing overflow during cooking.
- • Under-whisking, leading to a dense cake without open sponge pores.
Microwave and Steam the Sponge Cake
Place the paper cup in the microwave and cook on high for 45 to 60 seconds. The cake will rise significantly and set with visible airy pockets. Let the cup rest upside down on a plate for 2 minutes to cool.
- • Cake has expanded past the rim with a springy, porous surface.
- • No wet batter sheen visible on top.
- • Overcooking, which turns the sponge rubbery and hard.
- • Tearing the paper cup immediately while the cake is still steaming.
Shape the Sponge Body
Tear away the paper cup and place the yellow cake on a cutting board. Use a serrated knife to slice off the curved dome and trim all four sides into a clean rectangular prism mimicking a standard kitchen sponge.
- • Cake is trimmed into a sharp 90-degree rectangular block.
- • Outer skin is removed, exposing open porous sponge-like holes.
- • Pressing down hard with the knife instead of using gentle sawing strokes, crushing the pores.
- • Leaving rounded sides that ruin the illusion.
Create the Green Scouring Pad Texture
Crush cookies into a coarse, uneven gravel texture inside a small bowl. Add 2 drops of green food coloring and mix with a fork until the crumbs are stained dark green with varied grit sizes.
- • Crumbs are uniformly dark forest green with a rough, sandy texture.
- • No dry, uncolored cookie dust remains at the bottom.
- • Grinding cookies into fine powder instead of coarse granules.
- • Adding too much water/dye, turning crumbs into soggy dough.
Attach Scouring Layer and Add Suds
Brush a thin layer of honey across the top face of the yellow sponge block and press the green crumb mixture firmly onto it in an even layer. In a cup, froth cold milk with the handheld frother until bubbly, then spoon airy foam over one corner to resemble dish soap suds.
- • Green layer forms a crisp 2-3mm top layer that stays attached when tipped.
- • Glistening white foam clusters sit naturally on the sponge surface.
- • Using too much honey, causing the scouring layer to slide off.
- • Pouring liquid milk instead of scooping only dry surface foam.
Credit: inspired by an original tutorial by Andrey Grechka — watch the original on YouTube.
Don’t have everything?
- No Handheld milk frother? Shake cold milk vigorously in a sealed mason jar for 30 seconds
- No Paper cup? Microwave-safe ceramic coffee mug lightly greased with oil