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["Combine both oils in a measuring glass. Whisk egg yolk and garlic in a small bowl. Whisk in 1 tsp. water, then, whisking constantly, add oils, drop by drop at first (do not add too quickly). Whisk until oil is incorporated and aioli holds its shape. Stir in lemon juice; season with salt.", "Preheat oven to 300u00b0F. Cut squash in half lengthwise; scoop out seeds (peel if using butternut). Slice crosswise 1/4"" thick. Toss squash with 2 Tbsp. oil on a parchment-lined baking sheet and arrange in a single layer. Bake until tender (don't let them take on any color), 18-20 minutes. Remove from oven; leave oven on.", "Meanwhile, combine saffron and 1 Tbsp. hot water in a small bowl. Let sit 1 minute. Whisk saffron and soaking liquid, eggs, and tarragon in a large bowl.", "Heat remaining 1/4 cup oil in an ovenproof 10"" nonstick skillet over medium. Cook onion, stirring occasionally, until softened (don't let them take on any color), 10-12 minutes. Add kale and cook, stirring, until beginning to wilt, about 5 minutes. Add reserved squash and toss.", "Whisk salt into egg mixture; pour into skillet. Cook, stirring often with a rubber spatula and occasionally pushing away from skillet sides to shape and compress, until beginning to set and turn golden brown on the bottom, about 5 minutes. Press down on frittata to flatten. Transfer to oven; bake 20 minutes. Slide frittata onto a platter and serve with aioli."]
