This is the 16478th most frequent Turkish word.
yağında
"In its oil" or "in its fat."
The word "yağında" here refers to the olive oil being the source or medium where the taste resides.
Salatanın lezzeti zeytinyağında saklıdır.
The taste of the salad is hidden in the olive oil.
The word "yağında" in this sentence indicates that the bread was toasted using butter as the cooking medium.
Ekmek, tereyağında kızartıldı.
The bread was toasted in butter.
In this example, "yağında" signifies the location or the specific part of the car engine where the issue is present.