Costlier vegetables and fruits, such as onions and tomatoes, drove retail inflation to 10.09 per cent in October, entering double digits after seven months.
Inflation as measured by the consumer price index (CPI) was at 9.84 per cent in September and 9.52 per cent in the previous month.
Vegetable prices rose 45.67 per cent in October from a year earlier, compared with a 34.93 per cent increase in the previous month, according to government data released on Tuesday. Fruits were dearer by 12.84 per cent.
Inflation in the food and beverages segment was 12.56 per cent in October compared with 11.44 per cent in September.
The data showed that the corresponding provisional inflation rates for rural and urban areas for October were 10.11 per cent and 10.2 per cent, respectively.
For CPI inflation, price data are collected from select towns by the National Sample Survey Organisation and from select villages by the Department of Posts.
CPI-based inflation remained in double digits for several months until March this year before it declined to 9.39 per cent in April.
Data on inflation based on the wholesale price index will be released later this week.
Last month, the Reserve Bank of India hiked the key lending rate (repo rate) by 0.25 per cent to contain inflation in continuation of its hardline stance.