Translation:Why is there no jam in this lörtsy?
Hi Wesley. I cannot find support for your explanation that -yhtään- means -contains-. -Yhtään- is related to -yhtä- the partitive of of -yksi- but is a separate word meaning 1 -any- 2. -at all- according to dictionarypro.net. It is used especially in negative sentences -not any- -not at all-. I think of it as -not one bit-.