Friendly note/reminder that Þorrablót, in its original context, has no verifiable link to Þórr in name or practice. Etymologically, "Þorra-" is the genitive form of "Þorri", both the name of one of the months on the Old Icelandic and (likely) Old Norse calendars and a personal name meaning "frozen snow". A being by the name of Þorri, either personifying the month itself or appearing as a sort of Old Man Winter, may have been worshiped during this time. Þorrablót, then, means "Sacrifice of Þorri", whereas the equivalent for Þórr would be "Þórsblót".
It's not totally clear whether the month itself or the personified figure was the major focus of Þorrablót, but in either case the claim that Þorrablót is a feast in honor of Þórr is a result of a poor understanding of the name and its etymology. The modern revival of Þorrablót was initiated by Danish university students during the 19th century who may well have misunderstood the festival's name, and this misunderstanding has been further proliferated through organizations such as The Ásatrú Community in more recent decades.
Of course a person can make offerings to Þórr at this time if they wish, but Þorrablót itself is not a historically designated time for it.
