They specified a high-protein vegetarian meal. So unless the meal is purely made from nuts, it would have to consist of processed HP ingredients like TVP. A s

They specified a high-protein vegetarian meal. So unless the meal is purely made from nuts, it would have to consist of processed HP ingredients like TVP. A sibling post mentioned another study which suggests that it's actually the fibre content that determines satiety, which maybe matches your observation about oats? https://news.ycombinator.com/item?id=25613156 https://news.ycombinator.com/item?id=25613156