Learn Portuguese (Portugal): Prefiro o meu feijãozinho com um amendoinzinho. - I prefer my little bean stew with a little peanut.

This is a classic Portuguese spelling rule! The letter 'm' is only used at the very end of a word or before the letters 'p' and 'b'. Since adding the suffix -zinho puts the letter 'z' next to the nasal sound, the 'm' in amendoim must change to an 'n' (amendoinzinho).

Why do both feijão and amendoim take the -zinho suffix instead of the simpler -inho?

Words that end in nasal sounds (like the -ão in feijão or the -im in amendoim) almost always take the -zinho suffix. If you tried to add just -inho, the vowels would clash and be very awkward to pronounce. The z acts as a consonant bridge.

Does feijãozinho literally mean "a tiny bean" here?

It could, but Portuguese speakers often use diminutives to express affection, familiarity, or comfort rather than actual physical size. By saying feijãozinho, the speaker is showing that they really enjoy their portion of beans!

I remember the verb is preferir. Why is it spelled prefiro here?