Update: John Maxwell and I have a startup making nutritionally complete food, MealSquares (which is likely better for weightloss see below)
This came up at a meetup a while back. Several people, myself included, expressed frustration with the time, cost, stress, of preparing reasonably healthy and tasty meals. I suspect this frustration is widespread among people who do work that requires a lot of focus. Leaving flow because your body needs maintenance is annoying. So I'm sharing a strategy that has helped me.
I was encouraged by the success of Soylent. I had been playing around with ingredients for post workout shakes for months. But reading the Soylent blog posts inspired me to do a full micronutrient breakdown of what I had been drinking and optimize in a more rigorous fashion. Why not copy the soylent recipe?
1. I'm not realistically going to source all of those ingredients
2. He risks (and has already had problems with) misdosing himself to deleterious effect, this problem doesn't exist with whole foods
3. The absorption of powders vs whole foods is contentious
4. I don't agree with his criteria for inclusion
In comparison, my recipe is extremely easy and cheap to source, due to the small number of ingredients.
There is an immediate problem with meal replacement shakes in that liquid calories tend to have a significantly smaller satiety effect than solid foods. So this will probably not be a good solution for you if have difficulties keeping your overall caloric intake down.
[EDIT: Removed the link to the recipe, John and I are planning to commercialize this in addition to MealSquares at some point. Get in touch with me if you really need the recipe and won't spread it around.]
This is a work in progress and I am looking for further ideas for improvement. Subjectively I can say I find this recipe delicious, and hugely prefer it post-workout to even the best junk food (pizza, etc.). The combination of milk, vanilla, banana, and orange juice tastes kind of like an orange julius. It has also been a major stress relief and time saver. I don't worry so much about nutrient deficiencies anymore as this shake in addition to a meat or egg based meal has me pretty well covered.
I am due for another blood panel and will report any anomalies as I've been drinking a similar concoction for around 6-8 months.
I am open to debating the merits of my ingredient choices (as well as the overall wisdom of this scheme) in the comments. Also please share any other strategies you have for making food less of a chore.
Edit: I finally got my blood panel back and everything is looking good. Triglycerides unchanged, HDL up, LDL slightly down. All other numbers within the healthy range. I'm a little concerned about my iron level (what is considered normal may not be optimal for longevity), and plan on giving blood to lower it, but this is orthogonal to the use of a dietary shake I believe.
Edit: Kefir is expensive but highly recommended for lactose intolerant individuals. It is also delicious.
While I'm intrigued by these and similar attempts and want people to do them so I can see what hapens, I would be leery of trying this on myself because I suspect nutrition goes beyond the micro/macro nutrients we currently understand. In particular, I'm not sure we can treat "carbs", "proteins" and "fats" as wholesale categories. Not that I know enough about the topic yet to make that statement...that's just the assumption my priors are telling me to go with until I educate myself further.
I'm not good at planning ahead of time, so the cooking in bulk thing doesn't really happen for me. If I'm really in a hurry, I find the fastest way to eat is to steam-cook veggies and meats (fish/seafood turn out well steamed, not sure how other meats work) in the microwave. If you don't have a steamer, just toss things in a bowl and cover the bowl with a plate. Ta-da, you just made a steam cooker! It takes less than a minute to set it up and turn on the microwave - certainly equal or less time than it takes to set up a soylent-type meal. Sprinkle on spice mix, sauce, etc if you are a flavor junkie.
In addition to that, I always keep fruits on hand. They can be eaten without preparation and provide energy quickly. It's mostly sugar, but you can turn to starchy bananas for something a bit more substantial. Also, avocados and coconuts are excellent sources of fat, which is especially helpful if you wish to cut back on animal products.
I get really lethargic after eating certain grains so I'm currently tending towards the Paleo philosophy on diet, but if you also eat bread you can save even more time, since you've added a food group which is filling and sold ready-made.
So I don't really ever spend more than two minutes per meal actively cooking unless I'm actually in the mood for something particularly tasty (in which case I'll put the effort into stir-frying or something). If you are willing to cut culinary corners and make liberal use of the microwave steam cook method, I find the only time consuming part of this is shopping.