Is anyone familiar with the type of finish on the cooking surface of this skillet? Looks like tree trunk rings growing out all the way to the edge and had a smoother
NJ GB-29 Large Gas Stove Cast Iron Boiling Ring Burner 8kW Restaurant Catering Outdoor - NJ Commerce
Amazon.com: Colacoo Eggs Rings, 4 Pack Stainless Steel Egg Cooking Rings, Round Mold for English Muffins, Griddle Cooking Shaper for Breakfast, Pancake Mold for frying Eggs and Omelet with 4 Silicone Handle:
What is this discoloration ring on my pan? : r/castiron