Peel the skin from the green papaya, then use the julienne peeler to julienne it into thin -- but crunchy -- strands.
Julienne a full carrot using the same method described above.
Slice the cucumbers into 2-inch long pieces, then cut lengthwise into fours.
Clean and chop the shallot bulb.
Clean the garlic cloves, them cut them into thin slices.
Cut the chillies into thin slices.
Combine the papaya, carrot, cucumbers, shallots, garlic, and chillies into a bowl.
Add sugar, MSG, vinegar (or fresh lime juice) and fish sauce to the bowl and mix everything together.
Your unripe papaya salad is ready to be served!