Pesachim 106b-107a
When is it permitted to wash one's hands before kiddush? \u2022 When may one wash with intent to eat bread hours later? \u2022 May one make kiddush or havdalah on beer or bread? \u2022 May one use tasty beer that causes digestive problems for kiddush? \u2022 May one make a blessing over unhealthy foods? \u2022 How much of the cup of benediction must be imbibed to discharge one's obligation?