If you mean you removed a potato that had gone inside and was causing harm or discomfort, then yes, that action can be Jain because it was done to reduce suffering and help another being.

In Jain dharma, the main principle is ahimsa — not harming living beings. If your intention was compassion and care, that is aligned with Jain values.

If you meant eating or handling a potato, then note that root vegetables like potato are generally avoided in Jain practice, especially by many Jains, because they involve harm to many lives. But helping a person in distress is different.

So in short: Helping remove it out of compassion = Jain. Using or eating root vegetables = generally not Jain practice.