marmalader

marmalade +‎ -er

marmalader (plural marmaladers) (rare)

1. A maker of marmalade.
   • 2021, Lucy Ellmann, Things Are Against Us:

     But is it really necessary for rivalrous marmaladers to circumnavigate the planet, flying all the way from Australia to Lake Windermere to show off their marmalade at a marmalade festival?

2. (Can we verify⁽⁺⁾ this sense?) (business, informal) A business that spreads its costs.
   • 2008, Peter Cheverton, Global Account Management, page 194:

     How many businesses measure true net profit, and how many are marmaladers? To 'marmalade' is to spread your costs (usually the fixed costs, but sometimes also the variable ones) across all customers, with no regard to the actual costs involved in servicing those customers.