Regular Soylent will keep you alive and healthy, but if you're used to enjoying a normal breakfast with a cup of coffee, switching solely to the liquid meal replacement can be a shock. Soylent Coffiest should help. Its plant-based formula provides 400 calories, or 20% of your daily nutritional requirements, via soy protein, algal oil for energy and essential fatty acids, and real, lightly-roasted coffee that not only provides the same caffeine as a 16 oz. cup of joe but also helps give the normally bland drink a bit of flavor. Available in pre-mixed bottles so you can slurp one down on the way to the gym, office, or lab.