-In large bowl, combine arugula and cherry tomatoes and set aside.
-In small bowl, combine lemon juice and Dijon mustard and whisk to combine.
-Whisking constantly to emulsify, slowly add in olive oil.
-Whisk in salt and pepper
-Add desired amount of dressing to arugula and toss to combine well.
-Let sit for 5 minutes for lemon to break the bite of the arugula a bit.
-Top with Parmesan shavings and serve.
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