Even thickness and wide surface area prevent burning and give you more crispy real estate. (cookinglight.com)
A vessel with a wider surface area, like a large glass bowl, also works well. (healthimpactnews.com)
The wide platform, that is a staple of wedges, reduces the incline of your foot (remember plantar flexion) which causes less pressure on the ball of your foot, and helps you maintain balance through the wider surface area. (tomcoffeyfitness.com)