Is the word mel the same in Brazilian and European Portuguese?

Yes

The word "mel" is identical in meaning, spelling, and grammatical gender (masculine) in both Brazilian and European Portuguese. The only difference is the pronunciation of the final "l":

• Brazilian Portuguese: The "l" is vocalized, meaning it sounds like a "u" ([mew]).
• European Portuguese: The "l" is a true lateral consonant, where the tip of the tongue touches the alveolar ridge ([mɛl]).

Brazilian Portuguese Examples

1. Eu adoro comer torrada com mel. (I love eating toast with honey.)
2. Coloca uma colher de mel no meu café. (Put a spoonful of honey in my coffee.)
3. Esse mel de abelha é muito natural. (This bee honey is very natural.)
4. O mel ajuda a aliviar a tosse. (Honey helps to relieve the cough.)
5. Você prefere mel ou açúcar? (Do you prefer honey or sugar?)

European Portuguese Examples

1. Eu adoro comer torrada com mel. (I love eating toast with honey.)
2. Põe uma colher de mel ao meu café. (Put a spoonful of honey in my coffee.)
3. Este mel biológico é muito puro. (This organic honey is very pure.)
4. O mel ajuda a aliviar a tosse. (Honey helps to relieve the cough.)
5. Preferes mel ou açúcar? (Do you prefer honey or sugar?)