Captain Ninto is the solution to the hard anagram clue: AN PAINT TONIC. He will ask you to solve a puzzle box. Interestingly, when speaking to him for the challenge, he is very much sober. After he has given you your reward, however, he is once more drunk.
Gnome Restaurant tips
Please note that the amounts of the rewards are incomplete and are being updated with the variable range of the items given.
Item Quantity Rarity GE market price Uncut opal 2–3 (noted) Common 256–384 Uncut jade 2–7 (noted) Common 284–994 Uncut red topaz 1 Common 4,493 Uncut sapphire 7–10 (noted) Uncommon 3,066–4,380 Uncut emerald 3–7 (noted) Uncommon 2,055–4,795 Uncut ruby 2–5 (noted) Uncommon 2,574–6,435 Uncut diamond 1 Uncommon 2,680