NEW YORK (TheStreet) -- Some beers are available all-year-round. Others are seasonal and only available at certain times, but there is an even rare brew that is only available in the fall and in very small batches: "wet" or "fresh" hop beers.

Wet hop beers are those made using hops that have just been picked off the vine. Most beers are made with dried hops that are preserved in kilns immediately after they are harvested. Due to growing interest for new and interesting brews, an increasing number of breweries are using wet hops to make beers. Using wet hops to make beer is like using fresh herbs and spices as opposed to dried ones. Brewers use wet hops to get more robust flavors, sharper aromas and more bitterness. 

While most wet hop beers come from small craft breweries, the larger ones like Sierra Nevada and Lagunitas make wet hop beers, too. For those who like interesting, strong-tasting beers, those made from wet hops should be on the list of ones to try. Because they're only available in the fall, you have to act fast. 

Here are 18 wet hop beers you should try that you can only get right now. 

Amarillo Fresh Hop Pale Ale, 6.0% ABV

Reuben's Brews, Seattle

Born Yesterday Pale Ale, 6.2% ABV

Lagunitas Brewing Co., Lagunitas, Calif.

Breakside IPA, 6.4%

Breakside Brewery, Portland, Oreg.

Day Trip, 7.5% ABV

Wildcard Brewing Co., Redding, Calif.

Fresh Hop Red Ale, 7.4% ABV

Liquid Mechanics Brewing Co., Lafayette, Colo.

Gargoyle IPA, 7.3% ABV

Stone Brewing Co., Escondido, Calif.

Green Magic, 6.0% ABV

Mazama Brewing, Crovallis, Oreg.

Heavy Handed IPA, 6.7%

Two Brothers Brewing Co., Warrenville, Ill.

Journey to Planet Fresh-Hop, 6.1% ABV

Wild Ride Brew Co., Redmond, Oreg.

Northern Hemisphere Harvest, 6.7% ABV

Sierra Nevada Brewing Co., Chico, Calif.

Putah Creek Wet Hop Lager, 6.0% ABV

Sudwerk Brewing Co., Davis, Calif.

So Fresh & So Green, Green, 6.6% ABV

Terrapin Beer Co., Athens, Ga.

Sticky Fingers Fresh-Hopped Ale, 6.3% ABV

Crazy Mountain Brewery, Edwards, Colo.

Superdamp, 6.9% ABV

Comrade Brewing, Denver

Toad the Wet Hop Ale, 5.6% ABV

Green Man Brewing Co., Asheville, NC

Volume 4, 7.5% ABV

3 Sheeps Brewing Co., Sheboygan, Wisc.

Warrior IPA, 7.3% ABV

Left Hand Brewing Co., Longmont, Colo.

Wet Hop Ale, 6.4% ABV

Rogue Ales and Spirits, Newport, Oreg.