Aahaar/Bhojan (Food)

I accept leaf, flower, fruit and water offered with devotion

पत्रं पुष्पं फलं तोयं यो मे भक्त्या प्रयच्छति ।
तदहं भक्त्युपहृतमश्नामि प्रयतात्मनः ॥९:२६॥

Lord Krishna says to Arjun:
Whoever offers me leaf, flower, fruit and water with devotion, I enjoy the offering with devotion from that pure soul.

There are three categories of food.

आहारस्त्वपि सर्वस्य त्रिविधो भवति प्रियः ।
यज्ञस्तपस्तथा दानं तेषां भेदमिमं श्रृणु ॥१७:७॥

Lord Krishna says to Arjun:
But there are even three kinds of foods that are dear to all. Similarly, listen this difference of sacrifices, austerities and charities of them.

Saatwik people's favorite food are the ones which promote health, happiness and love.

आयुःसत्त्वबलारोग्यसुखप्रीतिविवर्धनाः ।
रस्याः स्निग्धाः स्थिरा हृद्या आहाराः सात्विकप्रियाः ॥१७:८॥

Lord Krishna says to Arjun:
The foods that promote health, essence, strength, happiness, love and are juicy, viscous, settled, pleasant are dear to Saatwik (truthful).

Raajasi food include bitter, sour, salty, very hot etc.

कट्वम्ललवणात्युष्णतीक्ष्णरुक्षविदाहिनः ।
आहारा राजसस्येष्टा दुःखशोकामयप्रदाः ॥१७:९॥

Lord Krishna says to Arjun:
Bitter, sour, salty, very hot, pungent, dry, spicy foods are loved by Raajasas (those with attachments), promote pain, grief sickness.

Taamasi foods include stale, juiceless, stinking, decomposed and even filthy leftover foods.

यातयामं गतरसं पूति पर्युषितं च यत् ।
उच्छिष्टमपि चामेध्यं भोजनं तामसप्रियम् ॥१७:१०॥

Lord Krishna says to Arjun:
Stale, juiceless, stinking, decomposed and even filthy leftover foods are dear to Taamasa (ignorant).

As a sidenote, there may be people who eat dogs, too.

विद्याविनयसम्पन्ने ब्राह्मणे गवि हस्तिनि ।
शुनि चैव श्वपाके च पण्डिताः समदर्शिनः ॥५:१८॥

Lord Krishna says to Arjun:
The wise, being humble with education, have equal vision in a Braahman (the knower of the ultimate truth), a cow, an elephant, a dog and even in a dog-eater.