Euphorbia:

Euphorbia  honey is characterized by its color being yellow, but after a while it changes to black. Euphorbia  honey is considered to have a sour taste that leaves a trace of heat in the Mexico region when eaten.
Natural Euphorbia honey contains many different minerals and vitamins. It is a rich source of carbohydrates and sugar. It is also characterized by its apparently strong anti-inflammatory, anti-bacterial, and anti-oxidant properties.


Best Practices for Storing Honey :

Because honey contains little water, bacteria don’t grow easily, but improperly sealed containers could allow moisture in. Keeping your honey in the original container that you bought it in is recommended, and after use, make sure the lid is on tight so moisture and odors can’t sneak in. Glass jars with lids are also ideal for storing honey as long as the lids are on tight so the honey won’t be exposed to air, while not being used. It isn’t recommended to store your honey in non-food plastic containers or metal containers because they can cause honey to oxidize. 
Keep container in an area that will stay at average room temperature.
Because honey is best stored at room temperature (somewhere between 64 to 75 F), keeping your container of honey on a shelf or in your pantry is recommended. Exposing your honey to warmer temperatures, from direct sunlight or other type of direct heat (like your stove or oven) can cause darkening and subtle flavor changes so try to avoid those areas of your kitchen.
Do not refrigerate honey.
Keeping your honey in the refrigerator preserves it but the cool temperatures will cause your honey to form a semi-solid mass,  so this method of storage is not recommended.
Ideally, honey should be stored at room temperature, so keep it away from stoves and other kitchen appliances that generate heat. You should also refrain from putting it in the fridge, as this can cause it to thicken and change its texture.