1/2 White Distilled Vinegar
1/2 Mustard Seeds
1/4 Celery Seed
Mix all in a 2 quart bowl (microwavable and microwave on High 8 to 9 minutes, stirring twice during cooking time.
Cukes will be crisp, onions translucent.
My mom has a small microwave that is not very powerful so she had to microwave hers a little longer.