The Best Gluten-Free Chocolate Cake

Name: The Best Gluten-Free Chocolate Cake
Prep time: 30 min
Cook time: 25 min
Total time: 55 min
Cuisine: American
Ingredients: 1 cup full-fat canned coconut milk; 1 Tbsp cider vinegar; 2 Tbsp instant coffee granules (or instant espresso); 1 cup boiling water; 1 3/4 cups gluten-free all-purpose flour (leveled); 3/4 cup raw cacao powder (or unsweetened cocoa powder); 1 1/3 cups coconut sugar*; 2 tsp baking soda; 1 tsp baking powder; 1 1/2 tsp sea salt; 1/2 cup avocado oil (or olive oil); 2 large eggs (at room temperature); 1 tsp pure vanilla extract; 1 1/2 cups chocolate chips (optional); 8 ounces dark chocolate (I use two 85% chocolate bars**); 2 Tbsp pure maple syrup; 1 pinch sea salt (to taste)