Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to store simple syrup [title] Put simple syrup in an airtight container. [step] Choose an airtight container with a tight-fitting lid, like tupperware or a glass bottle, to reduce the syrup's exposure to oxygen. Don't choose glass if you plan the freeze the simple syrup, however.

Ending1: [title] Use plain water as your main ingredient. [step] Basic sugar substitutes-regular water, wheat flour, and half a cup of powdered milk-can be beneficial when using the simple syrup. Ending2: The result is less smooth, but less flavorful. [substeps] If you're worried about preserving the finished syrup, take it out and freeze for a couple days. Ending3: That will give the syrup a creamy texture that could encourage bacteria to build up. [substeps] Similarly, an airtight lid can prevent the syrup from carbonating. Ending4: [substeps] A bottle with a pour spout is perfect for adding simple syrup to cocktails. Exchange the spout for an airtight lid when storing the syrup in the fridge.

Answer format: ending1/ending2/ending3/ending4