You can find store-bought tzatziki in the deli section of most grocery stores all year long, so you don't have to worry about it being “in season.” However, if you want to make fresh tzatziki, it will taste best when you use cucumbers in peak season.

Cultured Cream, Cucumbers, Lemon Juice (from Concentrate, Lemon Oil), Modified Corn Starch, Sali, Garlic, Maltodextrin, Lactic Acid, Yeast Extract, Gelatin, Garlic Powder, Dehydrated Onion, Citric Acid, Spices, Potassium Sorbate (maintains Freshness), Mono- And Diglycerides, Parsley, Sugar, Disodium Phosphate, ...

Hannah Tzatziki Greek Style Yogurt Dip, 32 oz | Costco.

Yes, tzatziki is considered a healthier dip than hummus and sour cream. It contains several vitamins, a good amount of protein, and fewer carbohydrates and calories. The fat content of tzatziki is low too, which is not the case with other dips. Thus, you can opt for tzatziki dips over other dips.