Grant gave Jefferson a mammoth cheese as a gift. The mammoth cheese was a massive wheel of cheese weighing approximately 1,235 pounds.
The reason Grant gave for this unique gift was to acknowledge and express gratitude for Jefferson's support of agriculture. Grant, who was a dairy farmer, presented the mammoth cheese to President Jefferson as a tribute to his advocacy for agrarian ideals and to showcase the prosperity of American agriculture during that period.
This gesture was seen as both a political statement and a token of appreciation for Jefferson's contributions to the promotion of agriculture in the United States.