The ratio is 1:1 of each ingredient (37.88 grams) per ½ pound.
Each level teaspoon is approximately 3 grams with 75 servings per 1/2 pound.
The recommended serving serving size is 1/2 to 1 level teaspoon, 2 to 3 times a day, with or without food. Pour water into the powder, stir and drink (cold or warm). Or, sprinkle on cooked food and stir before eating.
NOTE: Trehalose can be a problem in the case of two different types of Clostridium difficile infection, if you are exposed to these strains and are otherwise susceptible. At the very least, any person who is suffering from a C. difficile infection should consider eliminating trehalose from their diet for the duration of the infection. Please see CONTRADICTIONS below...
CONTRADICTIONS: A very minor group of the population may not tolerate Trehalose at small doses. Intolerance is indicated by gas, loose stools and diarrhea. Discontinue use and contact a medical professional to seek a test for a Clostridium difficile infection. Clostridium difficile is a bacterium that can cause a life-threatening infection. There are some other arguments that trehalose may be better than other sugars in some cases. Though there are still many unanswered questions, the implications of this research are potentially huge. At the very least, any person who is suffering from a C. difficile infection should consider eliminating trehalose from his diet for the duration of the infection. https://www.acsh.org/news/2018/01/04/food-additive-may-be-worsening-clostridium-difficile-epidemic-12367