1. Peel potatoes and remove skin from onion. Use a box grater or the medium shredder attachment of a food processor to coarsely grate potatoes and onion. Transfer vegetables to a mesh strainer lined with cheesecloth. Gather up the edges of the cheesecloth, then twist and squeeze to release as much moisture from the vegetables as possible. Empty into a large bowl and toss with lemon juice.
2. Mix dry ingredients together in a small bowl and beat eggs into the mixture. Toss egg batter with grated vegetables until fully coated. Season with salt (in moderation) and pepper. Meanwhile prepare waffle iron with cooking spray according to machine directions.
3. Evenly spoon half of the latke mixture into a hot waffle iron and cook for about 9 min., or until golden brown. Chop the chives. Serve with crème fraiche, smoked salmon, and chives.
Per serving: 198 calories, 7g fat, 4g saturated fat,130 mg cholesterol, 371mg sodium, 24g carbohydrate, 2g fiber, 2g sugar, 10g protein