Cut off the tough bottom ends of the asparagus and cut it into 2" pieces. Add the stalks to a foil-lined baking sheet. Drizzle the asparagus with the olive oil, and add the kosher salt and a few grinds of black pepper. Slice the lemon in half crosswise. Thinly slice 4 wheels from one half of the lemon, then add them to the baking sheet. Zest the other half of the lemon, sprinkle it onto the asparagus and mix with your hands to coat.
Imagine planning the perfect weekend dinner. Maybe you're going to grill some steaks, or you have a new pasta dish in mind. You went shopping and picked up everything you needed, including fresh, delicious asparagus. After a day in the fridge, you open the bag and a strong smell of rotten asparagus fills your kitchen. Dinner is ruined and you need a new plan.
"As Yotam Ottolenghi once said here before, a lasagne doesn't have to contain ragu and bechamel. In the broadest sense, lasagne is just a layered pasta dish using various fillings and sauces and, as such, the world is your lasagne."