The best way to store banana flower is to wrap it tightly in plastic wrap after coating it with lemon juice or vinegar to prevent browning, then refrigerate it for up to 3-4 days.
Banana flower, also known as banana blossom, discolors quickly once cut due to oxidation. To properly store it and maintain its freshness, follow these steps:
Preparation: Remove the tough outer bracts (the purple or reddish leaves) until you reach the tender, pale inner parts. You can use these outer bracts for other culinary purposes or discard them.
Preventing Discoloration: Immediately after cutting or preparing the banana flower, soak it in a bowl of water mixed with lemon juice or vinegar. This acidic solution helps to prevent oxidation and browning. Use about 1-2 tablespoons of lemon juice or vinegar per quart of water.
Wrapping: Drain the banana flower and wrap it tightly in plastic wrap. Ensure there are no air pockets to further minimize oxidation.
Refrigeration: Store the wrapped banana flower in the refrigerator. It should stay fresh for about 3-4 days.
Before Use: Before using the stored banana flower, check for any signs of spoilage, such as a slimy texture or foul odor. If it seems fine, rinse it again and proceed with your recipe.
To further reduce bitterness, blanch the banana flower in boiling water for a few minutes before storing it. This helps to remove some of the tannins that contribute to its bitter taste. Remember to cool it down in ice water before wrapping and refrigerating.