Hi,
You should:
- delete the variants you created in your product and remove the characteristic you selected in it.
- create an unpublished category
- in that category, create 1 products and add the characteristic and create 3 variants : Additional Palak Dal, Additional Dondakaya Fry and additional Sambar, each one with a price of 50 INR
- in the main product, add this product in the "options" area.
- in the HikaShop configuration page, set the "Product selection method" setting to "checkbox".
In the product popup, you'll now have 3 checkboxes, one for each additional variant, and one add to cart button for the main platter product plus the selected options.
- In the HikaShop configuration page, make sure the "group options with product" setting is turned on, that way it will display better during the checkout.