You can also soak lemon slices overnight.
You can still drink overnight lemons soaked in water. Although the vitamin C in overnight lemons has been oxidized due to too long a time, the fruit acid in them will still enter the water after being soaked in water.
However, it should be noted that if the overnight lemon slices have deteriorated, do not soak them in water, because a large amount of aflatoxin will be produced. Drinking overnight lemon may have a sour taste. If the taste is not good, you can also add honey or rock sugar for flavoring.
How to store lemon slices:
Fresh lemons can be stored at room temperature for about a month. Another way to preserve lemons is to cut fresh lemons into slices and place the slices in an airtight container. Add honey to the container to cover the lemon slices, then place the container in the refrigerator for storage. The shelf life is about one month.
As for how to preserve leftover lemons, you can wrap the lemons in plastic wrap. Then store the remaining uneaten lemons in the refrigerator. This method is very common, but it is best to eat the remaining lemons within a short period of time.