Sunflower oil shortages have emerged in several Greek chain stores, with some limiting sales and raising prices by up to 35% due to reduced supplies from Ukraine and Russia. The situation varies across retailers, with larger chains like Sklavenitis not imposing restrictions. The government insists there is no shortage and threatens fines for price gouging, recently imposing a record fine on Lidl Hellas. Despite these challenges, there are no reported shortages of other vegetables like flour and sugar. This situation is part of a broader issue of rising food prices in Greece, which began in August and has escalated in the past month.