The Collaborative International Dictionary of English v.0.48:

Skilligalee \Skil`li*ga*lee"\ (sk[i^]l`l[i^]*g[.a]*l[=e]"), n.
   A kind of thin, weak broth or oatmeal porridge, served out to
   prisoners and paupers in England; also, a drink made of
   oatmeal, sugar, and water, sometimes used in the English navy
   or army. [Written also skilligolee, skillygalee, etc.]
   [1913 Webster]