Duas for Eating and Drinking

Before meals

ุจูุณู’ู…ู ุงู„ู„ู‘ูŽู‡ู ูˆูŽุนูŽู„ูŽู‰ ุจูŽุฑูŽูƒูŽุฉู ุงู„ู„ู‘ูŽู‡ู
In the name of Allah and with the blessings of Allah I begin (eating)”.

(Mustadrak)

Dua if you forget recite Bismillah

ุจูุณู’ู…ู ุงู„ู„ูŽู‘ู‡ู ุฃูŽูˆูŽู‘ู„ูู‡ู ูˆูŽุขุฎูุฑูู‡ู
“In the name of Allah in the beginning and end”.
By not reciting Bismillah, Satan has an opportunity of partake in the food. In the name of Allah and with the blessings of Allah I begin (eating)”.

(Mishkat)

When Dining at Someoneโ€™s House, make this dua for them:

ุงู„ู„ูŽู‘ู‡ูู…ูŽู‘ ุจูŽุงุฑููƒู’ ู„ูŽู‡ูู…ู’ ูููŠู…ูŽุง ุฑูŽุฒูŽู‚ู’ุชูŽู‡ูู…ู’ ูˆูŽุงุบู’ููุฑู’ ู„ูŽู‡ูู…ู’ ูˆูŽุงุฑู’ุญูŽู…ู’ู‡ูู…ู’
“O Allah, grant him Your blessings in his sustenance, forgive him and have mercy on him”.

(Mishkat)

After Drinking Water:

ุงูŽู„ู’ุญูŽู…ู’ุฏู ู„ูู„ู‘ูฐู‡ู ุงู„ูŽู‘ุฐูู‰ู’ ุณูŽู‚ูŽุงู†ูŽุง ุนูŽุฐู’ุจุงู‹ ููุฑูŽุงุชุงู‹ ุจูุฑูŽุญู’ู…ูŽุชูู‡ู ูˆูŽู„ูŽู…ู’ ูŠูŽุฌู’ุนูŽู„ู’ู‡ู ู…ูู„ู’ุญุงู‹ ุงูุฌูŽุงุฌุงู‹ ุจูุฐูู†ููˆู’ุจูู†ูŽุง
All praise is due to Allah, Who of his mercy has granted us sweet and pleasant water to drink and did not make it bitter and salty due to our sins. 

(Beautiful Sunnats)

After Drinking Milk:

ุงู„ู„ูŽู‘ู‡ูู…ูŽู‘ ุจูŽุงุฑููƒู’ ู„ูŽู†ูŽุง ูููŠู‡ู ูˆูŽุฒูุฏู’ู†ูŽุง ู…ูู†ู’ู‡ู
โ€œO Allah, bless it for us and give us more of it.โ€

(Abu Dawood)