Crunchy and Creamy Mexican Mac & Cheese
¼ c. plus 2 t. kosher salt, divided1 qt. milk6 T. butter, cut into pieces6 T. flour1 lb. pkg. pasta (like penne, cavatappi or rotini)1 lb. Mexican chorizo1 T. olive oil1 (8-oz.) pkg. shredded extra-sharp cheddar cheese1 (8-oz.) pkg. shredded…