Place two coconuts adjacent to each other in your inventory. When you order Skye to cook, the food select menu will pop up. Tap the right coconut with the stylus and immediately start tapping the left coconut repeatedly. The number of food objects used for cooking should increase per stylus tap to the maximum of 20.

The visual clue that this glitch works is when your player keeps tossing coconuts you don't have. The game only freezes if you press X to see what food has been selected; instead, as soon as you're done giving orders, exit so Skye can begin her kitchen duties.

Note: This glitch is unverified and has the potential to freeze your unsaved game.