I zest up a few oranges in mine and add to boil. The first batch was good last winter.
In early December I made my second batch and also added zested orange peel and some homegrown leaf cascades to the chilled keg. It has remained hoppy and orange like all the way through the keg this time, instead of fading halfway through. Definitely recommend! I boiled just enough water to cover the peels and soaked for 3 minutes. Then added the water and put the peels in the mesh hop bag.
Primary #1: Hidden Lake Nut Brown #2: Apple Cider
Secondary #1: Berry Rhubarb Wine #2: Black Currant Wine
Kegged: Cascadian Dark Ale, Orange Pale Ale IV
Bottles: Spruced Winter Warmer, Surly Bender clone, Big 50 Barleywine, Framboise Lambic, Dark Belgian Strong, Kicked by a Moose Scotch Ale, Russian Imperial Stout, Sparkling Elderflower Wine, Barolo Wine, On Deck: 2H IPA III