Whether you’re a business luncher, a lady who lunches, a lucky lad of leisure or a late riser who needs to eat your hangover away, whatever your midday circumstance may be, Buenos Aires is heaving with lunch promo specials. Known locally as the menú del día (daily menu) or menus ejecutivos (executive menus), during weekdays restaurants are offering daily set menus, usually including a variation of a starter, main course, dessert and a drink. While many of these restaurants cost a hefty dinner price, lunchtime specials make for the ideal opportunity to visit new, tasty hot spots and eat like a king for a fraction of the price…