October is pickling season in Türkiye: cucumbers, cabbage, peppers and carrots are plentiful and cheap. But "turşu" (the Turkish word for pickles) is really two different jobs. Salt-brine pickles sit in salted water and get their sourness from the lactic acid that forms inside the jar; vinegar pickles do not ferment at all and get their sourness straight from the vinegar.
This guide covers the difference between the two, how many grams of salt go into each litre of brine, which salt to use, how to keep the vegetables under the brine, what temperature to hold and how many weeks to wait, and how to tell when a jar has gone bad. The ratios and temperatures are not arbitrary: salt level and acidity decide the safety of a pickle just as much as its taste. Knowing the signs of spoilage matters as much as knowing the recipe.