Preheat the oven to 325 degrees. Line two baking sheets with parchment paper or silpat mats. In a large mixing bowl, combine the milk, egg white, vanilla and salt. Stir to combine well. Add the coconut and stir again.
With a medium size scoop or a couple of spoons, scoop 1 1/2 - 2 tablespoon size mounds of the coconut mixture onto the baking sheets. Once the cookies have all been scooped onto the sheets, use your hands to press them firmly into mounds that have a peak at the top.
Bake for 15 - 20 minutes, until the coconut looks toasted on top of the cookies and they are lightly browned. If you are baking both sheets at the same time, rotate the trays half way through the baking time. Remove from the oven and cool for at least 5 minutes on the baking sheets. The cookies should be firm and set. Remove to a wire rack to finish cooling.
Once the cookies are completely cool, melt the chocolate in a small glass bowl. Microwave the chocolate at 50% power, stirring every 30 seconds. Once it is smooth and completely melted, lay out a fresh sheet of parchment or wax paper on a baking sheet. Dip the bottom of each cookie in the chocolate and then place the dipped cookies on the paper to dry.
Place the finished cookies in the refrigerator to harden or allow them to harden at room temperature. You can drizzle the cookies with extra chocolate if desired. Store the macaroons in an airtight container in the refrigerator. Enjoy!