It's obligatory to sample lokum while in İstanbul, and one of the best places to do so is at this historic shop, which has been operated by members of the same family for over 200 years. Buy it sade (plain), or made with cevizli (walnut), fıstıklı (pistachio), badem (almond) or roze (rose water). There's another store in Beyoğlu.