Picture of Bag it up (yes, literally)
Once the mix was ready, I oiled up the inside of the tortilla bag so the cement wouldn’t stick. Then I shoveled the mixture into the bag—slowly. Give it a few gentle shakes to settle the concrete into the corners. Don’t overdo it or the bag could split. I speak from messy experience. Before sealing the zip, gently press the air out. Then seal it shut like your project depends on it (because it kinda does).