In a medium bowl, combine the cooked and cooled rice, curry paste, ginger, garlic, shallot, shredded coconut, and fish sauce. Toss to combine well.
Sprinkle the cornstarch over the mixture and toss to combine well. Refrigerate for 3 hours or overnight.
Once the mixture is thoroughly chilled, heat enough avocado oil to cover the bottom of a large skillet over medium-high heat.
Scoop rice mixture from the bowl and press into 3.5” round patties. Sauté in the avocado oil until crisp, about 3 minutes. Flip and cook on the other side for approximately 3 minutes. Remove and let rest on a paper towel. Continue until approximately six patties are cooked.