Fries:
Slice skin-on potatoes lengthwise, then into batons about 3/8 X 3/8 inch. (Or use a french-fry cutter.)
"Blanch" fries in 350°F peanut oil about 3 minutes. Arrange in single layer on parchment paper. Refrigerate overnight.
At service, fry in 350°F peanut oil until golden brown, about 3 minutes.
While fries are browning, sauté 1/2 ounce peanut oil and red curry paste until aromatic, about 1 minute.5. Mix together fish sauce, lemon juice and sugar; stir until sugar is dissolved. Toss mixture with fries.6. Toss fries with sautéed curry paste, then with cilantro.
Red Curry Paste:
In small skillet over medium heat, toast dried chiles, coriander seeds, cumin seeds and peppercorns until fragrant. In ventilated area, grind to medium powder in spice grinder or blender.
In a food processor, combine shallots, garlic, galangal, fresh chiles, lemongrass, lemon juice, fish sauce, cilantro roots and stems, salt, sugar and lime zest; grind to paste. Blend in 1/4 cup peanut oil and paprika.
3. Remove paste to bowl. Stir in remaining 3/4 cup peanut oil.
Transfer to jar; refrigerate. (Curry paste will keep for about a week.)
Source: Idaho Potato Commission