Key PointsRetail inflation surged to 6.09% in October, breaching RBIs 6% upper tolerance limit for the first time in two years.A sharp rise in food inflation, particularly for items like onion and garlic, was a primary driver of the overall surge.Economists widely anticipate a 25 bps policy rate hike by the RBI in December to control inflation.Broadening inflationary pressures and concerns over the rabi crop outlook contribute to the grim forecast.