If you add an article to a recipe, you can choose every existing unit. But you cannot use every unit for every article. So after being added to the recipe the unit of the article is switched to a random unit that is allowed if you chose a wrong unit. But that is very dangerous if you don't notice it.
If you add an article to a recipe, you can choose every existing unit. But you cannot use every unit for every article. So after being added to the recipe the unit of the article is switched to a random unit that is allowed if you chose a wrong unit. But that is very dangerous if you don't notice it.