A small bowl that contains a clear liquid. Behind that is a bottle of distilled vinegar.
https://assets.chaos.social/media_attachments/files/112/410/420/464/850/174/original/6cb4fd438a383115.jpeg
This time, I used distilled vinegar concentrate, with you need to dilute 1:4 with water to get to an acid content of 5%.
But I've also used rice vinegar in the past. Any other vinegar should work, as well.
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