This is the 2807th most frequent Russian word.
ростове
"Ростове" is the prepositional case of "Ростов," meaning "in Rostov," a city in Russia.
The word 'Ростове' refers to the geographic location associated with the food being described as tasty.
Еда в Ростове очень вкусная.
The food in Rostov is very tasty.
Here, 'Ростове' specifies the location where the person resides, in this context the city Rostov.
Я живу в Ростове.
I live in Rostov.
In this sentence, 'Ростове' is used to indicate the place where the event (winter ending) happened.