What looks at first sight like another humble, hole-in-the-wall deli is actually a hidden gem of Brookline’s culinary scene. The husband-and-wife duo behind Cutty’s met while studying at the Culinary Institute of America, then spent five years at America’s Test Kitchen (which used to be based down the street from the Brookline Village sandwich shop). The couple’s institutional knowledge informs sandwiches of the highest order, such as Roast Beef 1000, their take on a Massachusetts staple with house-roasted beef and crispy shallots. Fans of the fry, take note: One Sunday each month is a designated Super Cluckin’ Sunday, the only time to savor Cutty’s buttermilk fried chicken sandwich.