In a bowl, mix together 2 cups flour and water until smooth with the consistency of pancake batter. Mix bread crumbs and macadamia nuts together. Season fillets with salt and pepper. Lightly dust with flour. Dip fillet in batter and roll into the bread crumb/nut mixture. Reserve in the refrigerator until ready to cook.
Fry fillet in enough oil to coat the bottom of the skillet. Fry until golden brown and turn to cook other side. Cook through until done. Serve with Guava Lime sauce on the side or drizzle on plate before adding chicken.
In a saucepan, add guava puree, lime juice and white wine. Reduce by half. Add heavy cream and reduce again by half. Whisk in butter a little at a time, stirring constantly over low heat. As soon as all the butter is incorporated, remove from heat and season with salt and pepper. Strain through a fine sieve. Keep sauce warm until needed.