You can create variations for food with different weights by using product attributes or options instead of separate products. Many e-commerce platforms allow you to set up one main product and add variations (e.g., 500g, 1kg) under it. If the system does not allow different unit counts, try using a dropdown or selection menu for weight options instead of separate listings. Check if your platform supports SKU variations, as some require unique SKUs for each variation. If needed, contact support to see if there’s a way to override the catalog restriction.