Some suggestions:

Cook garlic flowers by steaming several minutes. They must remain crunchy.

Serve warm with melted butter or a hollandaise sauce or add you favourite dressing and allow to cool.

Cut garlic flowers into pieces and fry them in either sesame oil or olive oil, along with your favourite vegetables, such as onions, tomatoes, red peppers etc. Serve with rice.

Chop raw garlic flowers and sprinkle them over soups and salads.