how do they make hungry jacks fries

Hungry Jack’s chips are typically made from peeled potato strips that are deep-fried in vegetable oil and salted after cooking. A public food-standards entry for “potato, fries, fast food outlet” describes them as peeled potatoes, long and rectangular, deep fried in monounsaturated oil and salted during cooking.

What that means

The exact restaurant recipe isn’t fully public, but the usual fast-food process is pretty standard: potatoes are cut into fries, cooked in oil, drained, and seasoned with salt. Nutritional and ingredient listings for Hungry Jack’s sides/snacks also show the chain uses oil-based frying and includes seasoning ingredients on related menu items.

Simple home-style version

If you’re trying to copy the style at home, the basic method is:

1. Cut peeled potatoes into thin batons.
2. Rinse and dry them well.
3. Fry once at a lower temperature until soft.
4. Fry again at a higher temperature until golden and crisp.
5. Salt immediately after frying.

One note

I couldn’t verify a special “secret” Hungry Jack’s-only fry process from official public material, so the safest answer is that they’re made like most fast-food fries: potato, oil, salt.