the blanching water should be plain.
Prepare the cold citric acid bath before you begin so the grapes can be transferred immediately.
Step 5: Prepare the Cold Citric Acid Bath
In a separate large bowl, combine:
1 liter cold water
5 grams food-grade citric acid
Stir until the citric acid dissolves.
The solution should be ready before the grapes enter the boiling water.
Use only citric acid specifically labeled for food use.
Step 6: Blanch the Grapes for 30–60 Seconds
Place a small batch of grapes into the boiling water.
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