I Taste a Liquor Never Brewed: Extended Metaphor

This whole poem is an extended metaphor comparing liquor to something else. The first line shows that this "liquor" is metaphorical through the speaker's statement "I taste a liquor never brewed." This conveys that the liquor is not actually something tangible, but is instead utilized as a metaphor. However, I'm not exactly sure what the speaker is comparing this too. Some clues in the text give me the perception that the speaker is somewhat "drunk" on nature's beauty. The speaker describes the liquor as "Inebriate of Air," "Debauchee of Dew," and "Reeling-thro endless summer days." All these details depict nature. The speaker, through these details, seems to convey that they enjoy nature to the point it is intoxicating. It goes a little far in describing this, but , to me, it just seems that the speaker is describing their appreciation of nature and all its beauties.