Pleasing Aron's Palate Pokemon Legends Z-A Side Mission Full Walkthrough and Guide

Unlocked after confronting Grisham during Main Mission 35.

Steel Type are immune to Poison so surely their food laced with Poison is like eating something spicy, right? Can we spice up Aron's food?

[1] Talk to the lady. She wants to add Poison to the metal she's feeding Aron so that there'll be an added flavor (Steel Type are not affected by Poison).

[2] Hit the metal scraps with the move Sludge Bomb.
・Sludge Bomb TM can be acquired by finishing Mable's Research Level 32

Spoiler!
The Aron seem to really like it so all's good?

・₽3,500
・Zinc x 5
・Power Band x 2