The goal of DIY Soylent is to make a drink (usually a drink but foodstuffs could be possible too) that fulfills all the daily nutritional requirements for you . Unlike existing meal drinks, which are only supplements that you can have in addition to your normal diet, Soylent is a meal replacement, if done right you should be able to live exclusively on Soylent and because you’re getting all your vitamins and minerals you should be healthier for it too.
Taste varies, most people add something to their recipes to add more flavour, chocolate or cinnamon seem to be the most common but really you can add anything. From what I hear the Official Soylent (the kind being made by Rob Rhinehart, the inventor) is apparently quite nice although the men in the trial group seem to like the taste more than women. The Official Soylent isn’t for open sale yet but you can preorder some on this page if you live in the US, deliveries are scheduled for December.
I probably wouldn’t recommend Soylent for infants, DIY or Official, simply because almost all nutritional information is geared towards adults and it would increase the risk factor involved. The risk for adults is pretty small because if you’re getting too much or too little of something, you’ll feel it but kids can’t always tell you whats wrong.
If you decide to try DIY Soylent for yourself though there’s a lot of useful imformation you’ll pick up about what’s good for you and what isn’t and you can carry that over to food for the kids.
Sorry for the wall of text