As a stout halfling, you're hardier than average and have some resistance to poison. Some say that stouts have dwarven blood. In the Forgotten Realms, these halflings are called stronghearts, and they're most common in the south.

Characters
Attributes
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Ability Scores
Con +1
Stout Resilience
You have advantage on saving throws against poison, and you have resistance against poison damage.
Hearty Supper
You gain proficiency with cook’s utensils. During a long rest, you can prepare and serve a meal that helps you and your allies recover from the rigors of adventuring, provided you have suitable food, cook’s utensils, and other supplies on hand. The meal serves up to six people, and each person who eats it gains 2 temporary hit points at the end of the long rest. In addition, those who partake of the meal have advantage on Constitution saving throws against disease for the next 24 hours.