Make three colored bases:
- Orange: whisk orange juice, milk, sugar, and salt until sugar dissolves. Chill until very cold.
- Raspberry: mix raspberries with milk and sugar, Chill until very cold. Adjust sweetness as needed.
- Lime: whisk lime juice, milk and sugar, Chill until very cold.
Layer and freeze:
- Pour a third of the orange base into the loaf pan to form the bottom layer.
- Freeze 20–30 minutes until the layer is set but not hard.
- Add a layer of raspberry base, gently smoothing. Freeze 20–30 minutes.
- Add lime base on top. Freeze 20–30 minutes.
- If you want a marbled effect instead of sharp layers, you can dollop all three in the pan and swirl with a knife a few times before the first freeze.
Marble or smooth and freeze:
- After layering, cover and freeze for 3–4 hours, checking every 60–90 minutes and giving a quick stir to break up ice crystals if needed.
Serve:
- Let sit 5–10 minutes at room temperature for easier scooping. Slice and scoop into bowls or cones.