This is the 10187th most frequent Japanese word.
長め
"長め" means "slightly long" or "on the longer side."
Here, '長め' is used to indicate that the skirt is somewhat longer than usual, implying a fashion statement or preference.
このスカートは長めでとてもエレガントです。
This skirt is rather long and very elegant.
In this sentence, '長め' describes extending the simmering time as compared to standard timings, for better results.
料理を作る際、煮る時間を少し長めにすると味が深まります。
While cooking, keeping the simmering time slightly longer enhances the flavor.
Here, '長め' is highlighting that the preparation time is somewhat more than what typically might be expected.