Note that Soylent bars aren't unflavoured -- they're caramel. Liquid soylent has a strong flavour of soy and flour, and tastes quite a bit like drinking pancake

Note that Soylent bars aren't unflavoured -- they're caramel. Liquid soylent has a strong flavour of soy and flour, and tastes quite a bit like drinking pancake batter. As for other bars, I suspect you will find that most energy bars are not healthy at all. Granola bars are mostly sugar/carbs. The only bar that I know that competes with Soylent in terms of being low-carb, high-fiber, high-protein is Quest. Like Soylent, they use isomalto-oligosaccharides (a whole lot of fiber), just more of it. Quest uses mostly natural sweeteners such as stevia and erythritol, though some contain sucralose. The average Quest bar (60g) has just around 5g carbohydrates.