These can be smoothies, bars, drinks, supplements, etc.
Is there something specific you look for (ex. price, ingredients, specific nutrients etc.)?
Is there a brand you like / avoid (ex. soylent, huel, hol food, etc.)
Edit:
I definitely don’t recommend fully replacing your diet with them. I know some people use them instead of other processed food / fast food / skipping meals entirely, and that’s the use case I had in mind for myself
I try to eat as few highly processed food as possible. Nearly all industrial meals and convenience products are packed with artificial substances to improve taste and especially optimize production cost. Most prominent water in combination with something to adjust viscosity.
Full meal replacements are the pinnacle of high processed foods IMO. You take “everything that a human needs” mix it with water and stuff it with aroma.
I got some problems with this approach:
I’m not confident that there is really everything I need in it
Extracting nutrition from food usually takes time, drinks are easy to process and probably release nutrition much fast (needs confirmation)
Eating is not only about getting nutrition, chewing also triggers effects on your body
Eating only artificial stuff destroys your taste, a lot of people are so used to highly processed stuff that they can’t even appreciate the taste of high quality food
Take a break for eating, you can socialise with your family or coworkers and give your body time to regenerate