Mouthwashing cake ingredients
Dispense water 3142 and gelatin 4213, place them under the mixer’s orange-rimmed inputs, and pull the lever. Mix the resulting cake base with sweetener 2341 using the lever again. Carry the finished cake to the table, equip the knife, and move the mouse from side to side to cut it.
What I saw
This guide compares public written sources checked on 2026-10-28. No gameplay test was performed. Specific details supported by only one source are labeled below.
Make and cut the birthday cake
The recipe book is on the kitchen’s right wall, the mixer is in the middle, and the dispenser is on the left. Use codes 3142, 4213 and 2341 to obtain water, gelatin and sweetener. Cybersport and NoobFeed independently agree on these codes and the two mixing stages.
Place water and gelatin under the mixer inputs, pull the lever and take the cake base. Mix that base with sweetener, pull the lever again, then take the cake to the crew’s table. The knife interaction is described by Cybersport and the community chapter guide.
Birthday mocktail and Wasteful
The optional birthday mocktail uses water 3142 and tonic 1324, followed by sweetener 2341. Making this drink at Curly’s birthday party unlocks Wasteful. The official Steam achievement description confirms this condition: it is not an achievement for throwing away cake supplies.
The later scene involving Swansea uses a different drink and a loose sweetener packet. Its packet location is on the sweetener page; do not confuse it with the optional birthday drink.
Bake the Mouthwashing cake
- Dispense ingredients. At the left kitchen dispenser, enter 3142 for water, 4213 for gelatin and 2341 for sweetener.
- Make the base. Place water and gelatin under the mixer’s two inputs and pull the lever. Collect the cake base.
- Finish the cake. Mix the cake base and sweetener, then pull the lever again and take the finished cake.
- Cut at the table. Bring the cake to the table, equip the knife and move the mouse from side to side.
Checked facts
| Item | What the sources say | Source |
|---|---|---|
| Water | 3142 | Two guides · Source links |
| Gelatin | 4213 | Two guides · Source links |
| Sweetener | 2341 | Two guides · Source links |
| Tonic | 1324, mocktail only | Two guides · Source links |
Questions
What are the Mouthwashing cake codes?
Water 3142, gelatin 4213, sweetener 2341.
How do you cut the cake?
Take the knife and move the mouse.
What is code 1324?
Tonic, for the mocktail base, not for the cake.
Where is the recipe?
On the right wall of the kitchen.
Where is the other sweetener?
The loose packet under bedding nearest the lounge door is for the later Swansea scene. The birthday drink uses the machine’s sweetener, code 2341.
Keep reading
Sources
- Cybersport: birthday cake — Checked 2026-10-28. Independent written guide; machine placement, two mixing stages and knife.
- NoobFeed: codes and recipes — Checked 2026-10-28. Independent written guide; codes and birthday recipe.
- Steam: achievement names and conditions — Checked 2026-10-28. Official achievement descriptions, including Cheater and Wasteful.
- Mouthwashing Wiki: Chapters — Checked 2026-10-28. Public article API; community source, not an official script.
Last checked . Page updated .