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large format corking
* '''Green glass v Brown glass''' - Some bottle types, especially champagne style bottles, may be more available in green glass compared to brown glass. Green glass does a worse job shielding the beer from UV spectrum light, which can interact with hop compounds to produce 'skunky' or lightstruck flavors and aromas. Many classic Belgian mixed fermentation beers are found in green glass, and some producers in North America seek out green glass over brown glass for their beers<ref>[http://jesterkingbrewery.com/jester-king-in-green-bottles Jester King blog post about green bottles]</ref><ref>[http://www.thebrewingnetwork.com/the-sour-hour-episode-15/ Jester King on the Sour Hour, pt 2]</ref> (~11 minutes in) (also, Bob Sylvester).
* '''Crown caps v corks''' - Deciding between corks and caps will depend on the specific beer and the brewer's goals with the beer. Caps are a cheaper closure and are also easier to apply. Aside from aesthetics, you may choose corks when intending to age or store beers lying down in order to keep the beer from interacting with the cap. Some producers have observed that crown caps contribute to an off-flavor in their beer, especially if the beer is acidic. Pierre Tilquin closes some bottles of every blend with crown caps in order to test carbonation levels. He has noticed that the crown capped bottles have an off flavor not present in the corked bottles <ref>Conversation between Pierre Tilquin and Dave Janssen, 24-Oct-2015</ref>. Other producers regularly package their acidic beer with crown caps (e.g. the Rare Barrel, Boon Geuze in 25 cl bottles) and have not mentioned a problem with doing so.
* '''Large format bottles''' - To cork large format bottles (1.5 L and up) without specialized equipment for large format corking, you will have to modify a corking process and/or possibly create some new equipment. MTFers have found For 1.5 L (magnum) bottles, standard floor corkers leave slightly too little room between the pedestal and the cork compressing section such that when a bottle does magnum bottles will not fit into a with the corker, unless it is modified. Shortening the spring or finding an alternate shorter spring will provide enough clearance to cork magnum bottles with standard floor corkers<ref name='MTF Large Format Corker 2'>[https://www.facebook.com/groups/MilkTheFunk/permalink/1364964486865095 MTF discussion on corking large format bottles 2]</ref>. Other methods which MTFers have used include compressing the corks can be inserted by compression the cork in a corker and then ejecting it and quickly inserting the cork into the bottleby hand <ref name='MTF Large Format Corking'>[https://www.facebook.com/groups/MilkTheFunk/permalink/1207333129294899/ MTF Discussion on corking large format bottles]</ref>. Raf has had success as well as hammering the cork in with a machined piece of wood and hammering the cork in and then mushrooming with a drill press<ref name='MTF Large Format Corking'/>. Hand corkers may also work but with them it is difficult to control cork depth. Vinnie from Russian River reports mushrooming the corks with 2x4 and his body weight<ref>[http://www.thebrewingnetwork.com/post1835/ Vinnie Cilurzo on the Brewing Network 15-Jan-2006]</ref> (1:22:30 in). 75 cl and 150 cl bottle have the same size opening and 3-9 l bottles have a larger, but consistent, opening. Some MTFers have used normal beer corks in large format bottles while others recommend sourcing larger corks<ref name='MTF Large Format Corking'/>.
==Equipment==