At home in a Ziploc bag combine the instant yeast, sugar, flour and salt. Put the olive oil into a small container.
At the campsite, heat up the water until it's warm but not hot (warm bath temperature). Add in the olive oil to the dry ingredients in the Ziploc and gradually add in the water into you get a doughy consistency (usually ~200ml). The dough will be sticky but not super wet.
Mix together the ingredients inside the Ziploc by closing the top and squishing the sides together. You don't need to knead the dough. Set the dough aside in a warm place to rise for about an hour.
While the dough is rising, find a couple large sticks with a diameter of approximately two inches. Whittle the ends of the stick with a Swiss Army Knife or carving knife to get a smooth surface for your dough. This is optional but I prefer this to get a nice clean stick.
Once the dough has risen, divide into four equal portions and roll each portion into a rope shape. Pinch one end of the rope onto the top of the stick and wrap the dough around to form a cone/swirl on the stick. Pinch the bottom to secure it onto the stick even more.
Hold or prop your stick up over the fire, choosing a spot with hot coals/embers to cook your dough evenly. Make sure to continuously rotate the bread so it doesn't burn.
You can tell your bread is done by pulling out a small bit to peak at the inside. It will still look quite doughy and will be a bit squishy if it's not fully cooked. Enjoy your bread as is or top with some fresh garlic butter, cinnamon sugar or whatever your heart desires!