BTW you can make Natto from Soyabeans with a suitable Bacillus Natto source. It's a strain of Bacillus Subtilis which requires biotin from soyabeans. If you are in Jordan temperatures might be suitable as I know that Bacillus Subtilis bacteria were used by the Germans to cure dysentery when they learned that Arabs used Camel dung to cure such problems which contained the bacteria. To ferment they do require a high humidity so you would need to maintain that. Other than that you could produce large amounts of Natto, containing Nattokinase and Vitamin K2 quite cheaply.
Vitamin K2 is usually obtained from Natto because of it's high concentration.
Bacillus Subtilis has been shown to cause the size of digestive villi to increase which improves the absorption of food. This is very helpful as it helps the body get more nutrients from food.