Maliks Tandoori in Cookham in Berkshire is offering a £10,000 reward for information leading to the conviction of whoever is suspected of an arson attack on the restaurant last month.
Fire broke out at the restaurant on 6 December at about 1.45am, forcing some members of staff to jump from first and second floor windows and leaving one man with serious leg injuries.
Restaurant founder Malik Ahmed has put up the reward as Thames Valley Police continue to appeal for information about the case, which is being treated as "arson with intent to endanger life".
Work to restore the Grade II-listed building is under way and Ahmed hopes to reopen it at the end of February or the beginning of March.
Investigating officer detective constable Rachel Kluger of Maidenhead Force CID told the Maidenhead Advertiser: "We are continuing to investigate this serious incident which could have resulted in far worse injuries to those in the property at the time."
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