Glossary beginning with N

Click one of the letters above to go to the page of all terms beginning with that letter.



Nematodes are a diverse phylum, but in terms of coffee agriculture, there are both beneficial and negative-acting nematodes. Depending on the species, a nematode may be beneficial or detrimental to plant health.From an agricultural perspective, there are two categories of nematode: predatory ones, which will kill garden pests like cutworms, and pest nematodes, like the root-knot nematode, which attack plants.Predatory nematodes can be bred by soaking a specific recipe of leaves and other detritus in water, in a dark, cool place, and can even be purchased as an organic form of pest control. Rotations of plants with nematode resistant species or varieties is one means of managing parasitic nematode infestations. For example, marigolds, grown over one or more seasons (the effective is cumulative), can be used to control nematodes.[11] Another is treatment with natural antagonists such as the fungus gliocladium roseum.

Nesco Coffee Roaster

A home air roaster with a 4oz capacity, a smoke reduction system, and auger-driven bean agitation. Formerly known as the Zach and Dani's Home Roaster (the same manufacturer made the unit under a private label).

New Crop

Refers to fresh shipments of green coffee within the first month or two of the earliest arrivals ... not quite the same as Current Crop.

New York "C"

The New York "C" market is the NYBOT (New York Board of Trade) trading platform for arabica coffees that determine base contract pricing. Prices on coffee futures are fixed against the C market.

Nitrogen Flushing

Pushing nitrogen, an unreactive gas, into a bag of coffee to force out oxygen, which is more reactive. Nitrogen flushing is often done as part of vacuum packaging, since vacuuming out oxygen is not sufficient to remove all oxygen in a bag.


Nutty is a broad flavor term, reminiscent of nuts. It is tied intrinsically to roast taste and the degree of roast, since a coffee that cups nutty at City+ will not be so at FC+. Nutty is usually a positive term but varies greatly as there are so many forms: hazelnut, walnuts, peanut, cashew, almond, etc. Occasionally, nutty can be a negative taste term, especially if it is out of character for a coffee. Some lower grown coffees can have less favorable nut flavors that imply a softness in bean density, and lack of quality. Nut skins is also a flavor tied to a drying, slightly astringent mouthfeel.