Beans, lentils etc. may be inexpensive but you skip over the fact that they and any other kind of plant source contain too little protein in comparison with the amount of energy.
Being vegan is easy for someone who does hard physical work, so they have to eat more than 3000 kcal per day. In that case, eating enough proteins that come from plant sources will still leave enough in the energy budget to also eat other food, for a complete diet.
On the other hand, if you have a sedentary lifestyle, working in the front of a computer, it is impossible to eat enough protein without eating too many calories.
There are plant protein extracts, but those are at least 3 to 5 times more expensive than cheap animal protein, e.g. chicken breast.
I have eaten for 4 years only plant-based proteins, but to satisfy simultaneously 3 constraints, enough proteins, not so many calories as to cause weight gain and price no greater than when eating chicken meat, in Europe where I live there was only 1 solution, with no alternatives.
The solution was to extract at home gluten from wheat flour, to supplement the proteins provided by lentils or other legumes. Any plant-based product that I could buy for enough protein would have been more expensive than chicken meat.
Extracting gluten, which is done by washing dough with abundant water, works. However it requires much time and much water. Extracting pure gluten requires so much water and so much time that I never did this regularly. I was typically removing around 75% of the starch from wheat flour, and with the result I was baking a bread that had about 50% to 60% protein content.
Besides wasting a lot of water and time every day, this procedure had the additional disadvantage that the amount of calories provided by eating enough protein was still rather large. This limited severely the possible menus, e.g. any starchy vegetables, e.g. potatoes or sweet potatoes or rice, and any starchy fruits, e.g. bananas, had to be forbidden. I gain weight extremely easily if I exceed my allowable daily energy intake.
These inconveniences have made me eventually abandon this approach. While I still eat mostly vegan food, I also use in cooking some whey protein concentrate, which can increase enough the protein content of plant-based food.
There already exists a technology for making whey protein concentrate otherwise than by the filtration of milk, i.e. by extracting it from a culture of genetically-modified Trichoderma fungus. I hope that this technology will become viable commercially, because unlike with fake meat produced from cell cultures, it is certain that with such a fungal culture one can make proteins less costly than by growing chicken or other domestic animals.
The availability of such a protein powder would solve completely the problem of vegan food for me. I do not need fake meat.
> Being vegan is easy for someone who does hard physical work, so they have to eat more than 3000 kcal per day. In that case, eating enough proteins that come from plant sources will still leave enough in the energy budget to also eat other food, for a complete diet.
> On the other hand, if you have a sedentary lifestyle, working in the front of a computer, it is impossible to eat enough protein without eating too many calories.
Anecdotal counterpoint - I've done hard physical work for ~2 years. For ~10 years before that and for about 1.5 after I stopped the physical work I've been spending most of my days sitting in front of the computer with the occasional walk to the grocery store. No sport or hiking or fitness.
I don't eat TVP or other condensed protein food. I don't count calories or even consciously decide when to eat protein rich food. Sometimes I'll even just eat pasta or other food relatively low in protein and rich in carbs and calories. Yet, I'm in the same physical health as I've always been. Not athletic, but normal weight - the type of weight an annoying aunt would see and say "ooh, you gotta eat more". :) The first BMI calc I tried put me right in the middle of the green zone (yes, I know BMI is not that important). And I could return to the same physical work if I wanted to.
Besides my anecdotal counterpoint, there are many sources online you can find where people discuss their diet, how much it costs and their lifestyle.
> The solution was to extract at home gluten from wheat flour, to supplement the proteins provided by lentils or other legumes.
> any starchy vegetables, e.g. potatoes or sweet potatoes or rice, and any starchy fruits, e.g. bananas, had to be forbidden.
That seems very extreme to me. Were you trying to be a bodybuilder or maintain some low body fat or something while maintaining this sedentary lifestyle? I eat potatoes, sweet potatoes and bananas all the time.
> I gain weight extremely easily if I exceed my allowable daily energy intake.
If that's the case, why not spend some of the calories on exercise? Although I find it hard to believe that with my current and previous sedentary lifestyle I expend enough calories to not care what I eat on a vegan diet, but you gain weight "extremely easily". Do you have some rare disease, if you don't mind my asking? Cause the only fat people I know are the ones who overeat, regardless of diet. Even if they start blaming "slow metabolism" or something else, it's obvious when you see them eat.
> There are plant protein extracts, but those are at least 3 to 5 times more expensive than cheap animal protein, e.g. chicken breast.
Economy of scale and subsidies.
> There already exists a technology for making whey protein concentrate otherwise than by the filtration of milk, i.e. by extracting it from a culture of genetically-modified Trichoderma fungus.
Interesting. Although I don't see myself buying it, I'll look it up.
> fake meat
It's as real as you can get. "Fake meat" would be TVP prepared like meat. You wouldn't say "fake whey protein" if you extract it from genetically-modified Trichoderma fungus.
Being vegan is easy for someone who does hard physical work, so they have to eat more than 3000 kcal per day. In that case, eating enough proteins that come from plant sources will still leave enough in the energy budget to also eat other food, for a complete diet.
On the other hand, if you have a sedentary lifestyle, working in the front of a computer, it is impossible to eat enough protein without eating too many calories.
There are plant protein extracts, but those are at least 3 to 5 times more expensive than cheap animal protein, e.g. chicken breast.
I have eaten for 4 years only plant-based proteins, but to satisfy simultaneously 3 constraints, enough proteins, not so many calories as to cause weight gain and price no greater than when eating chicken meat, in Europe where I live there was only 1 solution, with no alternatives.
The solution was to extract at home gluten from wheat flour, to supplement the proteins provided by lentils or other legumes. Any plant-based product that I could buy for enough protein would have been more expensive than chicken meat.
Extracting gluten, which is done by washing dough with abundant water, works. However it requires much time and much water. Extracting pure gluten requires so much water and so much time that I never did this regularly. I was typically removing around 75% of the starch from wheat flour, and with the result I was baking a bread that had about 50% to 60% protein content.
Besides wasting a lot of water and time every day, this procedure had the additional disadvantage that the amount of calories provided by eating enough protein was still rather large. This limited severely the possible menus, e.g. any starchy vegetables, e.g. potatoes or sweet potatoes or rice, and any starchy fruits, e.g. bananas, had to be forbidden. I gain weight extremely easily if I exceed my allowable daily energy intake.
These inconveniences have made me eventually abandon this approach. While I still eat mostly vegan food, I also use in cooking some whey protein concentrate, which can increase enough the protein content of plant-based food.
There already exists a technology for making whey protein concentrate otherwise than by the filtration of milk, i.e. by extracting it from a culture of genetically-modified Trichoderma fungus. I hope that this technology will become viable commercially, because unlike with fake meat produced from cell cultures, it is certain that with such a fungal culture one can make proteins less costly than by growing chicken or other domestic animals.
The availability of such a protein powder would solve completely the problem of vegan food for me. I do not need fake meat.