Italics denote consumables available through add-ons. The Jet of Fallout 4 is different from Jet as we knew it from Fallout games past. Craftable Y Hubflower 2 Mentats 1 Whiskey 1. Grape Mentats are the only Chem that directly boosts the player’s bartering abilities. Vim ( Vim Captain's Blend, Vim Quartz, Vim Refresh) īlood pack ( Glowing blood pack, Irradiated blood) Grape Mentats Buy for 10 lower Sell for 10 higher CHR +5.