Can you eat the seeds of Tamarind if you roast them or boil them

I personally have not read the book, though I know someone who did and remember hearing of the drink. _{Strike 2, I am also not a nutritionist.} Here's my best guess by looking at each piece:

Certainly the ingredients do bring taste to the combination, but I don't think it is just that.

Mixing the chia seeds into a drink may make it more agreeable for people. Easier to stomach, so to say. The chia seeds will absorb the liquid. With this, you will feel fuller. It will also make the drink thicker.

Lime juice is high in vitamin C. This can help with muscle soreness. Lemon can be used instead of lime - also high in vitamin C.

I've heard the sugar is optional, though it will sweeten the drink and add calories.

There are a few seeds which are good to eat. These generally get sold in the supermarket (pumpkin seeds, apricot kernels). If you buy the fruit containing them, you can keep the seeds.

If you want to store them, you should dry them first. Spread the cleaned seeds in a single layer on paper and put it in a warm dry place (not in direct sunlight), and wait a few days. You should deshell them right before consuming, that way they keep longer. If you want to eat them right away, don't dry them. They taste better when fresh. Some should be roasted in the shell before eaten (pumpkin seeds, sunflower seeds).

There is little sense in eating seeds not commonly sold in supermarkets, like melon seeds or apple pips. They don't have any nutritional value for humans, or taste bad (e.g. very bitter), or both. It is even dangerous to experiment too much. For example, peach kernels contain poisonous cyanide compounds. So stick to what is commonly eaten, there is a reason the other seeds aren't used.