Mix Siracha, Coconut Aminos, ginger and garlic for the marinade.Place the sliced steak in a gallon ziplock bag with the marinade and mix well to coat.Refrigerate for 1 hour or overnight.Remove steak from the fridge about 30 minutes before cooking to bing to room temperature.While the steak is warming, melt the coconut oil in a nonstick pan.Add the cauliflower to the pan and saute' on high heat for about 10 minutes, stirring often, until tender and slightly browned.Heat a 10" by 10" cast iron grill pan on high heat, until a drop of water will sizzle when dropped on it.