keynes was skeptical but unworried , and laurence , being more conscious of owing gratitude than truly grateful , and guilty over his lack of sincerity , did not try to interfere with the menus , even as the servants daily trooped back from the markets with a succession of increasingly bizarre ingredients : penguins , served stuffed with grain and berries and their own eggs ; smoked elephant meat brought in by hunters willing to risk the dangerous journey inland ; shaggy , fat-tailed sheep with hair instead of wool ; and the still-stranger spices and vegetables .