Learn Spanish (Latin America): Yo iba a saborear el helado, pero el sol está muy fuerte. - I was going to savor the ice cream, but the sun is very strong.

The structure iba a plus an infinitive (like saborear) is the standard way to express an intention you had in the past, translating to "was going to." The imperfect tense sets the scene of a plan in progress. If you used fui a saborear, it would mean you physically went somewhere and actually did it, rather than just having an unfulfilled plan.

Does saborear mean exactly the same thing as comer?

Not exactly. While comer just means to eat, saborear means to savor, taste, or enjoy slowly. It emphasizes the intention to really take your time enjoying the ice cream, which makes the fact that the hot sun is ruining the plan a bigger disappointment!

Why use está instead of es? Isn't the sun permanently strong?

When talking about the weather or the current state of the environment, you use estar. Even though the sun is inherently a powerful star (which would take ser in a scientific context), el sol está muy fuerte describes how intensely it is beating down right at this specific, temporary moment.

Is it normal to mix a past tense (iba) with a present tense (está) in the same sentence?