As some Indian religions, such as Jainism and Vaishnavism, have restrictions on what kinds of food that can be eaten (including onion and garlic), there are often some good alternative products at Indian grocers that avoid these high fructan foods that are poorly tolerated by people with fructose malabsorption, or people with IBS who find they benefit from a low FODMAP diet.
I also found cheap containers of glucose and prepackaged paneer sauces. The paneer sauces contain no onion or garlic. They do contain cashews, which from the latest testing from Monash University are high in FODMAPs, however the entire packet is 50g which is used for a meal that serves 5, so an individual serving should have less than 10g. I have fructose malabsorption, and haven't had a problem with the sauces so far, so it's worth assessing your individual tolerance to cashews and giving it a try if you can tolerate small amounts (and like paneer, of course). Paneer, as a soft cheese, does contain lactose, and these sauces also contain milk solids, and so they won't be tolerated by people with lactose or casein intolerances. As always, check the labels, and be careful of any specific, individual intolerances.